Finding the Fourth Proportional to 1,403.38, 1,937.27 and 879.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.38 : 1,937.27 = 879.71 : x
2. Step 2: Convert to fraction form
   1,403.38/1,937.27 = 879.71/x
3. Step 3: Cross multiply
   1,403.38x = 1,937.27 × 879.71
4. Step 4: Simplify right side
   1,403.38x = 1,704,231.39
5. Step 5: Solve for x
   x = 1,704,231.39/1,403.38
6. Step 6: Final answer
   x = 1,214.38