Finding the Fourth Proportional to 1,131.89, 1,695.08 and 784.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.89 : 1,695.08 = 784.25 : x
2. Step 2: Convert to fraction form
   1,131.89/1,695.08 = 784.25/x
3. Step 3: Cross multiply
   1,131.89x = 1,695.08 × 784.25
4. Step 4: Simplify right side
   1,131.89x = 1,329,359.98
5. Step 5: Solve for x
   x = 1,329,359.98/1,131.89
6. Step 6: Final answer
   x = 1,174.46