Finding the Fourth Proportional to 1,549.76, 2,139.06 and 886.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,549.76 : 2,139.06 = 886.82 : x
2. Step 2: Convert to fraction form
   1,549.76/2,139.06 = 886.82/x
3. Step 3: Cross multiply
   1,549.76x = 2,139.06 × 886.82
4. Step 4: Simplify right side
   1,549.76x = 1,896,961.19
5. Step 5: Solve for x
   x = 1,896,961.19/1,549.76
6. Step 6: Final answer
   x = 1,224.04