Finding the Fourth Proportional to 1,074,787.25, 1,612,194.71 and 316,456.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074,787.25 : 1,612,194.71 = 316,456.30 : x
2. Step 2: Convert to fraction form
   1,074,787.25/1,612,194.71 = 316,456.30/x
3. Step 3: Cross multiply
   1,074,787.25x = 1,612,194.71 × 316,456.30
4. Step 4: Simplify right side
   1,074,787.25x = 510,189,172,806.17
5. Step 5: Solve for x
   x = 510,189,172,806.17/1,074,787.25
6. Step 6: Final answer
   x = 474,688.52