Finding the Fourth Proportional to 1,557, 2,147.98 and 958.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557 : 2,147.98 = 958.96 : x
2. Step 2: Convert to fraction form
   1,557/2,147.98 = 958.96/x
3. Step 3: Cross multiply
   1,557x = 2,147.98 × 958.96
4. Step 4: Simplify right side
   1,557x = 2,059,826.90
5. Step 5: Solve for x
   x = 2,059,826.90/1,557
6. Step 6: Final answer
   x = 1,322.95