Finding the Fourth Proportional to 1,152.89, 1,591.00 and 628.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.89 : 1,591.00 = 628.92 : x
2. Step 2: Convert to fraction form
   1,152.89/1,591.00 = 628.92/x
3. Step 3: Cross multiply
   1,152.89x = 1,591.00 × 628.92
4. Step 4: Simplify right side
   1,152.89x = 1,000,610.15
5. Step 5: Solve for x
   x = 1,000,610.15/1,152.89
6. Step 6: Final answer
   x = 867.91