Finding the Fourth Proportional to 1,484.34, 2,225.78 and 868.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.34 : 2,225.78 = 868.20 : x
2. Step 2: Convert to fraction form
   1,484.34/2,225.78 = 868.20/x
3. Step 3: Cross multiply
   1,484.34x = 2,225.78 × 868.20
4. Step 4: Simplify right side
   1,484.34x = 1,932,422.20
5. Step 5: Solve for x
   x = 1,932,422.20/1,484.34
6. Step 6: Final answer
   x = 1,301.87