Finding the Fourth Proportional to 2,457.72, 3,684.12 and 896.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.72 : 3,684.12 = 896.40 : x
2. Step 2: Convert to fraction form
   2,457.72/3,684.12 = 896.40/x
3. Step 3: Cross multiply
   2,457.72x = 3,684.12 × 896.40
4. Step 4: Simplify right side
   2,457.72x = 3,302,445.17
5. Step 5: Solve for x
   x = 3,302,445.17/2,457.72
6. Step 6: Final answer
   x = 1,343.70