Finding the Fourth Proportional to 1,728.88, 2,385.86 and 942.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.88 : 2,385.86 = 942.91 : x
2. Step 2: Convert to fraction form
   1,728.88/2,385.86 = 942.91/x
3. Step 3: Cross multiply
   1,728.88x = 2,385.86 × 942.91
4. Step 4: Simplify right side
   1,728.88x = 2,249,640.57
5. Step 5: Solve for x
   x = 2,249,640.57/1,728.88
6. Step 6: Final answer
   x = 1,301.21