Finding the Fourth Proportional to 1,377,145.24, 2,064,872.22 and 478,200.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,145.24 : 2,064,872.22 = 478,200.76 : x
2. Step 2: Convert to fraction form
   1,377,145.24/2,064,872.22 = 478,200.76/x
3. Step 3: Cross multiply
   1,377,145.24x = 2,064,872.22 × 478,200.76
4. Step 4: Simplify right side
   1,377,145.24x = 987,423,464,906.89
5. Step 5: Solve for x
   x = 987,423,464,906.89/1,377,145.24
6. Step 6: Final answer
   x = 717,007.50