Finding the Fourth Proportional to 1,326,116.88, 1,989,189.18 and 1,061,559.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,326,116.88 : 1,989,189.18 = 1,061,559.12 : x
2. Step 2: Convert to fraction form
   1,326,116.88/1,989,189.18 = 1,061,559.12/x
3. Step 3: Cross multiply
   1,326,116.88x = 1,989,189.18 × 1,061,559.12
4. Step 4: Simplify right side
   1,326,116.88x = 2,111,641,915,434.32
5. Step 5: Solve for x
   x = 2,111,641,915,434.32/1,326,116.88
6. Step 6: Final answer
   x = 1,592,349.77