Finding the Fourth Proportional to 1,661.52, 2,293.00 and 915.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.52 : 2,293.00 = 915.65 : x
2. Step 2: Convert to fraction form
   1,661.52/2,293.00 = 915.65/x
3. Step 3: Cross multiply
   1,661.52x = 2,293.00 × 915.65
4. Step 4: Simplify right side
   1,661.52x = 2,099,585.45
5. Step 5: Solve for x
   x = 2,099,585.45/1,661.52
6. Step 6: Final answer
   x = 1,263.65