Finding the Fourth Proportional to 1,690,196.28, 2,332,478.98 and 915,826.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690,196.28 : 2,332,478.98 = 915,826.91 : x
2. Step 2: Convert to fraction form
   1,690,196.28/2,332,478.98 = 915,826.91/x
3. Step 3: Cross multiply
   1,690,196.28x = 2,332,478.98 × 915,826.91
4. Step 4: Simplify right side
   1,690,196.28x = 2,136,147,020,491.89
5. Step 5: Solve for x
   x = 2,136,147,020,491.89/1,690,196.28
6. Step 6: Final answer
   x = 1,263,845.54