Finding the Fourth Proportional to 1,180.04, 1,762.17 and 1,111.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.04 : 1,762.17 = 1,111.70 : x
2. Step 2: Convert to fraction form
   1,180.04/1,762.17 = 1,111.70/x
3. Step 3: Cross multiply
   1,180.04x = 1,762.17 × 1,111.70
4. Step 4: Simplify right side
   1,180.04x = 1,959,004.39
5. Step 5: Solve for x
   x = 1,959,004.39/1,180.04
6. Step 6: Final answer
   x = 1,660.12