Finding the Fourth Proportional to 2,372.10, 3,558.96 and 891.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.10 : 3,558.96 = 891.53 : x
2. Step 2: Convert to fraction form
   2,372.10/3,558.96 = 891.53/x
3. Step 3: Cross multiply
   2,372.10x = 3,558.96 × 891.53
4. Step 4: Simplify right side
   2,372.10x = 3,172,915.15
5. Step 5: Solve for x
   x = 3,172,915.15/2,372.10
6. Step 6: Final answer
   x = 1,337.60