Finding the Fourth Proportional to 1,139,508.06, 1,572,691.72 and 709,926.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,508.06 : 1,572,691.72 = 709,926.60 : x
2. Step 2: Convert to fraction form
   1,139,508.06/1,572,691.72 = 709,926.60/x
3. Step 3: Cross multiply
   1,139,508.06x = 1,572,691.72 × 709,926.60
4. Step 4: Simplify right side
   1,139,508.06x = 1,116,495,685,627.75
5. Step 5: Solve for x
   x = 1,116,495,685,627.75/1,139,508.06
6. Step 6: Final answer
   x = 979,804.99