Finding the Fourth Proportional to 1,010.89, 1,395.03 and 591.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.89 : 1,395.03 = 591.52 : x
2. Step 2: Convert to fraction form
   1,010.89/1,395.03 = 591.52/x
3. Step 3: Cross multiply
   1,010.89x = 1,395.03 × 591.52
4. Step 4: Simplify right side
   1,010.89x = 825,188.15
5. Step 5: Solve for x
   x = 825,188.15/1,010.89
6. Step 6: Final answer
   x = 816.30