Finding the Fourth Proportional to 1,363.52, 1,880.71 and 915.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.52 : 1,880.71 = 915.19 : x
2. Step 2: Convert to fraction form
   1,363.52/1,880.71 = 915.19/x
3. Step 3: Cross multiply
   1,363.52x = 1,880.71 × 915.19
4. Step 4: Simplify right side
   1,363.52x = 1,721,206.98
5. Step 5: Solve for x
   x = 1,721,206.98/1,363.52
6. Step 6: Final answer
   x = 1,262.33