Finding the Fourth Proportional to 1,131.57, 1,703.43 and 1,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.57 : 1,703.43 = 1,012.50 : x
2. Step 2: Convert to fraction form
   1,131.57/1,703.43 = 1,012.50/x
3. Step 3: Cross multiply
   1,131.57x = 1,703.43 × 1,012.50
4. Step 4: Simplify right side
   1,131.57x = 1,724,722.88
5. Step 5: Solve for x
   x = 1,724,722.88/1,131.57
6. Step 6: Final answer
   x = 1,524.19