Finding the Fourth Proportional to 1,101.06, 1,643.72 and 1,062.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.06 : 1,643.72 = 1,062.59 : x
2. Step 2: Convert to fraction form
   1,101.06/1,643.72 = 1,062.59/x
3. Step 3: Cross multiply
   1,101.06x = 1,643.72 × 1,062.59
4. Step 4: Simplify right side
   1,101.06x = 1,746,586.90
5. Step 5: Solve for x
   x = 1,746,586.90/1,101.06
6. Step 6: Final answer
   x = 1,586.28