Finding the Fourth Proportional to 2,477.16, 3,713.72 and 916.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.16 : 3,713.72 = 916.16 : x
2. Step 2: Convert to fraction form
   2,477.16/3,713.72 = 916.16/x
3. Step 3: Cross multiply
   2,477.16x = 3,713.72 × 916.16
4. Step 4: Simplify right side
   2,477.16x = 3,402,361.72
5. Step 5: Solve for x
   x = 3,402,361.72/2,477.16
6. Step 6: Final answer
   x = 1,373.49