Finding the Fourth Proportional to 1,738.16, 2,602.86 and 1,121.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.16 : 2,602.86 = 1,121.92 : x
2. Step 2: Convert to fraction form
   1,738.16/2,602.86 = 1,121.92/x
3. Step 3: Cross multiply
   1,738.16x = 2,602.86 × 1,121.92
4. Step 4: Simplify right side
   1,738.16x = 2,920,200.69
5. Step 5: Solve for x
   x = 2,920,200.69/1,738.16
6. Step 6: Final answer
   x = 1,680.05