Finding the Fourth Proportional to 2,863.41, 4,296.18 and 915.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.41 : 4,296.18 = 915.77 : x
2. Step 2: Convert to fraction form
   2,863.41/4,296.18 = 915.77/x
3. Step 3: Cross multiply
   2,863.41x = 4,296.18 × 915.77
4. Step 4: Simplify right side
   2,863.41x = 3,934,300.19
5. Step 5: Solve for x
   x = 3,934,300.19/2,863.41
6. Step 6: Final answer
   x = 1,373.99