Finding the Fourth Proportional to 1,510.57, 2,084.61 and 1,131.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.57 : 2,084.61 = 1,131.79 : x
2. Step 2: Convert to fraction form
   1,510.57/2,084.61 = 1,131.79/x
3. Step 3: Cross multiply
   1,510.57x = 2,084.61 × 1,131.79
4. Step 4: Simplify right side
   1,510.57x = 2,359,331.30
5. Step 5: Solve for x
   x = 2,359,331.30/1,510.57
6. Step 6: Final answer
   x = 1,561.88