Finding the Fourth Proportional to 1,372.32, 1,894.72 and 1,057.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.32 : 1,894.72 = 1,057.02 : x
2. Step 2: Convert to fraction form
   1,372.32/1,894.72 = 1,057.02/x
3. Step 3: Cross multiply
   1,372.32x = 1,894.72 × 1,057.02
4. Step 4: Simplify right side
   1,372.32x = 2,002,756.93
5. Step 5: Solve for x
   x = 2,002,756.93/1,372.32
6. Step 6: Final answer
   x = 1,459.39