Finding the Fourth Proportional to 1,483.78, 2,047.28 and 886.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.78 : 2,047.28 = 886.16 : x
2. Step 2: Convert to fraction form
   1,483.78/2,047.28 = 886.16/x
3. Step 3: Cross multiply
   1,483.78x = 2,047.28 × 886.16
4. Step 4: Simplify right side
   1,483.78x = 1,814,226.43
5. Step 5: Solve for x
   x = 1,814,226.43/1,483.78
6. Step 6: Final answer
   x = 1,222.71