Finding the Fourth Proportional to 1,191.80, 1,785.71 and 930.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.80 : 1,785.71 = 930.73 : x
2. Step 2: Convert to fraction form
   1,191.80/1,785.71 = 930.73/x
3. Step 3: Cross multiply
   1,191.80x = 1,785.71 × 930.73
4. Step 4: Simplify right side
   1,191.80x = 1,662,008.64
5. Step 5: Solve for x
   x = 1,662,008.64/1,191.80
6. Step 6: Final answer
   x = 1,394.54