Finding the Fourth Proportional to 1,560.89, 2,340.18 and 738.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.89 : 2,340.18 = 738.20 : x
2. Step 2: Convert to fraction form
   1,560.89/2,340.18 = 738.20/x
3. Step 3: Cross multiply
   1,560.89x = 2,340.18 × 738.20
4. Step 4: Simplify right side
   1,560.89x = 1,727,525.51
5. Step 5: Solve for x
   x = 1,727,525.51/1,560.89
6. Step 6: Final answer
   x = 1,106.76