Finding the Fourth Proportional to 1,465.47, 2,196.27 and 878.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,465.47 : 2,196.27 = 878.58 : x
2. Step 2: Convert to fraction form
   1,465.47/2,196.27 = 878.58/x
3. Step 3: Cross multiply
   1,465.47x = 2,196.27 × 878.58
4. Step 4: Simplify right side
   1,465.47x = 1,929,598.90
5. Step 5: Solve for x
   x = 1,929,598.90/1,465.47
6. Step 6: Final answer
   x = 1,316.71