Finding the Fourth Proportional to 1,298.72, 1,947.03 and 886.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.72 : 1,947.03 = 886.82 : x
2. Step 2: Convert to fraction form
   1,298.72/1,947.03 = 886.82/x
3. Step 3: Cross multiply
   1,298.72x = 1,947.03 × 886.82
4. Step 4: Simplify right side
   1,298.72x = 1,726,665.14
5. Step 5: Solve for x
   x = 1,726,665.14/1,298.72
6. Step 6: Final answer
   x = 1,329.51