Finding the Fourth Proportional to 1,585.31, 2,375.82 and 659.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.31 : 2,375.82 = 659.77 : x
2. Step 2: Convert to fraction form
   1,585.31/2,375.82 = 659.77/x
3. Step 3: Cross multiply
   1,585.31x = 2,375.82 × 659.77
4. Step 4: Simplify right side
   1,585.31x = 1,567,488.82
5. Step 5: Solve for x
   x = 1,567,488.82/1,585.31
6. Step 6: Final answer
   x = 988.76