Finding the Fourth Proportional to 1,516.31, 2,091.63 and 956.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,516.31 : 2,091.63 = 956.58 : x
2. Step 2: Convert to fraction form
   1,516.31/2,091.63 = 956.58/x
3. Step 3: Cross multiply
   1,516.31x = 2,091.63 × 956.58
4. Step 4: Simplify right side
   1,516.31x = 2,000,813.55
5. Step 5: Solve for x
   x = 2,000,813.55/1,516.31
6. Step 6: Final answer
   x = 1,319.52