Finding the Fourth Proportional to 1,372.85, 1,895.43 and 1,225.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.85 : 1,895.43 = 1,225.25 : x
2. Step 2: Convert to fraction form
   1,372.85/1,895.43 = 1,225.25/x
3. Step 3: Cross multiply
   1,372.85x = 1,895.43 × 1,225.25
4. Step 4: Simplify right side
   1,372.85x = 2,322,375.61
5. Step 5: Solve for x
   x = 2,322,375.61/1,372.85
6. Step 6: Final answer
   x = 1,691.65