Finding the Fourth Proportional to 1,385.92, 2,076.90 and 1,017.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.92 : 2,076.90 = 1,017.82 : x
2. Step 2: Convert to fraction form
   1,385.92/2,076.90 = 1,017.82/x
3. Step 3: Cross multiply
   1,385.92x = 2,076.90 × 1,017.82
4. Step 4: Simplify right side
   1,385.92x = 2,113,910.36
5. Step 5: Solve for x
   x = 2,113,910.36/1,385.92
6. Step 6: Final answer
   x = 1,525.28