Finding the Fourth Proportional to 1,591.32, 2,385.96 and 667.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.32 : 2,385.96 = 667.53 : x
2. Step 2: Convert to fraction form
   1,591.32/2,385.96 = 667.53/x
3. Step 3: Cross multiply
   1,591.32x = 2,385.96 × 667.53
4. Step 4: Simplify right side
   1,591.32x = 1,592,699.88
5. Step 5: Solve for x
   x = 1,592,699.88/1,591.32
6. Step 6: Final answer
   x = 1,000.87