Finding the Fourth Proportional to 1,128,017.98, 1,557,013.38 and 725,609.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,017.98 : 1,557,013.38 = 725,609.98 : x
2. Step 2: Convert to fraction form
   1,128,017.98/1,557,013.38 = 725,609.98/x
3. Step 3: Cross multiply
   1,128,017.98x = 1,557,013.38 × 725,609.98
4. Step 4: Simplify right side
   1,128,017.98x = 1,129,784,447,521.53
5. Step 5: Solve for x
   x = 1,129,784,447,521.53/1,128,017.98
6. Step 6: Final answer
   x = 1,001,565.99