Finding the Fourth Proportional to 1,689,498.81, 2,331,496.31 and 915,112.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,498.81 : 2,331,496.31 = 915,112.18 : x
2. Step 2: Convert to fraction form
   1,689,498.81/2,331,496.31 = 915,112.18/x
3. Step 3: Cross multiply
   1,689,498.81x = 2,331,496.31 × 915,112.18
4. Step 4: Simplify right side
   1,689,498.81x = 2,133,580,669,244.87
5. Step 5: Solve for x
   x = 2,133,580,669,244.87/1,689,498.81
6. Step 6: Final answer
   x = 1,262,848.28