Finding the Fourth Proportional to 1,531.94, 2,296.83 and 915.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.94 : 2,296.83 = 915.62 : x
2. Step 2: Convert to fraction form
   1,531.94/2,296.83 = 915.62/x
3. Step 3: Cross multiply
   1,531.94x = 2,296.83 × 915.62
4. Step 4: Simplify right side
   1,531.94x = 2,103,023.48
5. Step 5: Solve for x
   x = 2,103,023.48/1,531.94
6. Step 6: Final answer
   x = 1,372.78