Finding the Fourth Proportional to 1,243,111.91, 1,715,481.98 and 691,818.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,111.91 : 1,715,481.98 = 691,818.38 : x
2. Step 2: Convert to fraction form
   1,243,111.91/1,715,481.98 = 691,818.38/x
3. Step 3: Cross multiply
   1,243,111.91x = 1,715,481.98 × 691,818.38
4. Step 4: Simplify right side
   1,243,111.91x = 1,186,801,964,322.79
5. Step 5: Solve for x
   x = 1,186,801,964,322.79/1,243,111.91
6. Step 6: Final answer
   x = 954,702.43