Finding the Fourth Proportional to 654,046.90, 978,737.55 and 453,426.10

Step by Step Solution

1. Step 1: Write the proportion equation
   654,046.90 : 978,737.55 = 453,426.10 : x
2. Step 2: Convert to fraction form
   654,046.90/978,737.55 = 453,426.10/x
3. Step 3: Cross multiply
   654,046.90x = 978,737.55 × 453,426.10
4. Step 4: Simplify right side
   654,046.90x = 443,785,150,220.06
5. Step 5: Solve for x
   x = 443,785,150,220.06/654,046.90
6. Step 6: Final answer
   x = 678,521.91