Finding the Fourth Proportional to 1,742.16, 2,404.72 and 1,079.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.16 : 2,404.72 = 1,079.60 : x
2. Step 2: Convert to fraction form
   1,742.16/2,404.72 = 1,079.60/x
3. Step 3: Cross multiply
   1,742.16x = 2,404.72 × 1,079.60
4. Step 4: Simplify right side
   1,742.16x = 2,596,135.71
5. Step 5: Solve for x
   x = 2,596,135.71/1,742.16
6. Step 6: Final answer
   x = 1,490.18