Finding the Fourth Proportional to 1,402.88, 1,937.28 and 879.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.88 : 1,937.28 = 879.82 : x
2. Step 2: Convert to fraction form
   1,402.88/1,937.28 = 879.82/x
3. Step 3: Cross multiply
   1,402.88x = 1,937.28 × 879.82
4. Step 4: Simplify right side
   1,402.88x = 1,704,467.04
5. Step 5: Solve for x
   x = 1,704,467.04/1,402.88
6. Step 6: Final answer
   x = 1,214.98