Finding the Fourth Proportional to 1,131.86, 1,697.37 and 888.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.86 : 1,697.37 = 888.86 : x
2. Step 2: Convert to fraction form
   1,131.86/1,697.37 = 888.86/x
3. Step 3: Cross multiply
   1,131.86x = 1,697.37 × 888.86
4. Step 4: Simplify right side
   1,131.86x = 1,508,724.30
5. Step 5: Solve for x
   x = 1,508,724.30/1,131.86
6. Step 6: Final answer
   x = 1,332.96