Finding the Fourth Proportional to 1,740.50, 2,403.15 and 1,120.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,740.50 : 2,403.15 = 1,120.58 : x
2. Step 2: Convert to fraction form
   1,740.50/2,403.15 = 1,120.58/x
3. Step 3: Cross multiply
   1,740.50x = 2,403.15 × 1,120.58
4. Step 4: Simplify right side
   1,740.50x = 2,692,921.83
5. Step 5: Solve for x
   x = 2,692,921.83/1,740.50
6. Step 6: Final answer
   x = 1,547.21