Finding the Fourth Proportional to 1,069,288.10, 1,603,932.15 and 998,429.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069,288.10 : 1,603,932.15 = 998,429.30 : x
2. Step 2: Convert to fraction form
   1,069,288.10/1,603,932.15 = 998,429.30/x
3. Step 3: Cross multiply
   1,069,288.10x = 1,603,932.15 × 998,429.30
4. Step 4: Simplify right side
   1,069,288.10x = 1,601,412,853,772.00
5. Step 5: Solve for x
   x = 1,601,412,853,772.00/1,069,288.10
6. Step 6: Final answer
   x = 1,497,643.95