Finding the Fourth Proportional to 1,372.57, 1,892.50 and 953.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.57 : 1,892.50 = 953.28 : x
2. Step 2: Convert to fraction form
   1,372.57/1,892.50 = 953.28/x
3. Step 3: Cross multiply
   1,372.57x = 1,892.50 × 953.28
4. Step 4: Simplify right side
   1,372.57x = 1,804,080.02
5. Step 5: Solve for x
   x = 1,804,080.02/1,372.57
6. Step 6: Final answer
   x = 1,314.38