Finding the Fourth Proportional to 2,523.32, 3,784.96 and 879.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.32 : 3,784.96 = 879.86 : x
2. Step 2: Convert to fraction form
   2,523.32/3,784.96 = 879.86/x
3. Step 3: Cross multiply
   2,523.32x = 3,784.96 × 879.86
4. Step 4: Simplify right side
   2,523.32x = 3,330,242.17
5. Step 5: Solve for x
   x = 3,330,242.17/2,523.32
6. Step 6: Final answer
   x = 1,319.78