Finding the Fourth Proportional to 1,198,375.31, 1,653,807.15 and 689,077.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198,375.31 : 1,653,807.15 = 689,077.69 : x
2. Step 2: Convert to fraction form
   1,198,375.31/1,653,807.15 = 689,077.69/x
3. Step 3: Cross multiply
   1,198,375.31x = 1,653,807.15 × 689,077.69
4. Step 4: Simplify right side
   1,198,375.31x = 1,139,601,606,492.97
5. Step 5: Solve for x
   x = 1,139,601,606,492.97/1,198,375.31
6. Step 6: Final answer
   x = 950,955.51