Finding the Fourth Proportional to 1,802.52, 2,704.56 and 878.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.52 : 2,704.56 = 878.88 : x
2. Step 2: Convert to fraction form
   1,802.52/2,704.56 = 878.88/x
3. Step 3: Cross multiply
   1,802.52x = 2,704.56 × 878.88
4. Step 4: Simplify right side
   1,802.52x = 2,376,983.69
5. Step 5: Solve for x
   x = 2,376,983.69/1,802.52
6. Step 6: Final answer
   x = 1,318.70