Finding the Fourth Proportional to 1,007.39, 1,510.62 and 591.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.39 : 1,510.62 = 591.12 : x
2. Step 2: Convert to fraction form
   1,007.39/1,510.62 = 591.12/x
3. Step 3: Cross multiply
   1,007.39x = 1,510.62 × 591.12
4. Step 4: Simplify right side
   1,007.39x = 892,955.15
5. Step 5: Solve for x
   x = 892,955.15/1,007.39
6. Step 6: Final answer
   x = 886.41