Finding the Fourth Proportional to 1,116.80, 1,541.34 and 930.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.80 : 1,541.34 = 930.02 : x
2. Step 2: Convert to fraction form
   1,116.80/1,541.34 = 930.02/x
3. Step 3: Cross multiply
   1,116.80x = 1,541.34 × 930.02
4. Step 4: Simplify right side
   1,116.80x = 1,433,477.03
5. Step 5: Solve for x
   x = 1,433,477.03/1,116.80
6. Step 6: Final answer
   x = 1,283.56