Finding the Fourth Proportional to 1,288,535.24, 1,779,068.31 and 805,317.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,535.24 : 1,779,068.31 = 805,317.59 : x
2. Step 2: Convert to fraction form
   1,288,535.24/1,779,068.31 = 805,317.59/x
3. Step 3: Cross multiply
   1,288,535.24x = 1,779,068.31 × 805,317.59
4. Step 4: Simplify right side
   1,288,535.24x = 1,432,715,005,282.30
5. Step 5: Solve for x
   x = 1,432,715,005,282.30/1,288,535.24
6. Step 6: Final answer
   x = 1,111,894.31