Finding the Fourth Proportional to 1,587.95, 2,191.58 and 958.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.95 : 2,191.58 = 958.83 : x
2. Step 2: Convert to fraction form
   1,587.95/2,191.58 = 958.83/x
3. Step 3: Cross multiply
   1,587.95x = 2,191.58 × 958.83
4. Step 4: Simplify right side
   1,587.95x = 2,101,347.86
5. Step 5: Solve for x
   x = 2,101,347.86/1,587.95
6. Step 6: Final answer
   x = 1,323.31