Finding the Fourth Proportional to 1,131.49, 1,686.65 and 1,069.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.49 : 1,686.65 = 1,069.93 : x
2. Step 2: Convert to fraction form
   1,131.49/1,686.65 = 1,069.93/x
3. Step 3: Cross multiply
   1,131.49x = 1,686.65 × 1,069.93
4. Step 4: Simplify right side
   1,131.49x = 1,804,597.43
5. Step 5: Solve for x
   x = 1,804,597.43/1,131.49
6. Step 6: Final answer
   x = 1,594.89