Finding the Fourth Proportional to 1,111.93, 1,665.03 and 1,079.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.93 : 1,665.03 = 1,079.08 : x
2. Step 2: Convert to fraction form
   1,111.93/1,665.03 = 1,079.08/x
3. Step 3: Cross multiply
   1,111.93x = 1,665.03 × 1,079.08
4. Step 4: Simplify right side
   1,111.93x = 1,796,700.57
5. Step 5: Solve for x
   x = 1,796,700.57/1,111.93
6. Step 6: Final answer
   x = 1,615.84