Finding the Fourth Proportional to 1,650.72, 2,276.10 and 1,385.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.72 : 2,276.10 = 1,385.58 : x
2. Step 2: Convert to fraction form
   1,650.72/2,276.10 = 1,385.58/x
3. Step 3: Cross multiply
   1,650.72x = 2,276.10 × 1,385.58
4. Step 4: Simplify right side
   1,650.72x = 3,153,718.64
5. Step 5: Solve for x
   x = 3,153,718.64/1,650.72
6. Step 6: Final answer
   x = 1,910.51