Finding the Fourth Proportional to 1,728.55, 2,385.39 and 942.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.55 : 2,385.39 = 942.59 : x
2. Step 2: Convert to fraction form
   1,728.55/2,385.39 = 942.59/x
3. Step 3: Cross multiply
   1,728.55x = 2,385.39 × 942.59
4. Step 4: Simplify right side
   1,728.55x = 2,248,444.76
5. Step 5: Solve for x
   x = 2,248,444.76/1,728.55
6. Step 6: Final answer
   x = 1,300.77