Finding the Fourth Proportional to 1,402.32, 1,935.45 and 878.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.32 : 1,935.45 = 878.52 : x
2. Step 2: Convert to fraction form
   1,402.32/1,935.45 = 878.52/x
3. Step 3: Cross multiply
   1,402.32x = 1,935.45 × 878.52
4. Step 4: Simplify right side
   1,402.32x = 1,700,331.53
5. Step 5: Solve for x
   x = 1,700,331.53/1,402.32
6. Step 6: Final answer
   x = 1,212.51