Finding the Fourth Proportional to 1,113,964.02, 1,670,978.43 and 272,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113,964.02 : 1,670,978.43 = 272,515.50 : x
2. Step 2: Convert to fraction form
   1,113,964.02/1,670,978.43 = 272,515.50/x
3. Step 3: Cross multiply
   1,113,964.02x = 1,670,978.43 × 272,515.50
4. Step 4: Simplify right side
   1,113,964.02x = 455,367,522,340.67
5. Step 5: Solve for x
   x = 455,367,522,340.67/1,113,964.02
6. Step 6: Final answer
   x = 408,781.18