Finding the Fourth Proportional to 1,510.40, 2,083.52 and 958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.40 : 2,083.52 = 958.72 : x
2. Step 2: Convert to fraction form
   1,510.40/2,083.52 = 958.72/x
3. Step 3: Cross multiply
   1,510.40x = 2,083.52 × 958.72
4. Step 4: Simplify right side
   1,510.40x = 1,997,512.29
5. Step 5: Solve for x
   x = 1,997,512.29/1,510.40
6. Step 6: Final answer
   x = 1,322.51