Finding the Fourth Proportional to 1,423,109.25, 2,134,531.54 and 398,532.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423,109.25 : 2,134,531.54 = 398,532.25 : x
2. Step 2: Convert to fraction form
   1,423,109.25/2,134,531.54 = 398,532.25/x
3. Step 3: Cross multiply
   1,423,109.25x = 2,134,531.54 × 398,532.25
4. Step 4: Simplify right side
   1,423,109.25x = 850,679,660,498.50
5. Step 5: Solve for x
   x = 850,679,660,498.50/1,423,109.25
6. Step 6: Final answer
   x = 597,761.32