Finding the Fourth Proportional to 1,454,748,599.25, 2,182,141,794.56 and 485,400,215.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,454,748,599.25 : 2,182,141,794.56 = 485,400,215.25 : x
2. Step 2: Convert to fraction form
   1,454,748,599.25/2,182,141,794.56 = 485,400,215.25/x
3. Step 3: Cross multiply
   1,454,748,599.25x = 2,182,141,794.56 × 485,400,215.25
4. Step 4: Simplify right side
   1,454,748,599.25x = 1,059,212,096,783,018,240
5. Step 5: Solve for x
   x = 1,059,212,096,783,018,240/1,454,748,599.25
6. Step 6: Final answer
   x = 728,106,627.72