Finding the Fourth Proportional to 1,330.61, 1,834.72 and 1,120.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,330.61 : 1,834.72 = 1,120.47 : x
2. Step 2: Convert to fraction form
   1,330.61/1,834.72 = 1,120.47/x
3. Step 3: Cross multiply
   1,330.61x = 1,834.72 × 1,120.47
4. Step 4: Simplify right side
   1,330.61x = 2,055,745.34
5. Step 5: Solve for x
   x = 2,055,745.34/1,330.61
6. Step 6: Final answer
   x = 1,544.96