Finding the Fourth Proportional to 1,100.99, 1,643.64 and 1,062.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.99 : 1,643.64 = 1,062.56 : x
2. Step 2: Convert to fraction form
   1,100.99/1,643.64 = 1,062.56/x
3. Step 3: Cross multiply
   1,100.99x = 1,643.64 × 1,062.56
4. Step 4: Simplify right side
   1,100.99x = 1,746,457.90
5. Step 5: Solve for x
   x = 1,746,457.90/1,100.99
6. Step 6: Final answer
   x = 1,586.27