Finding the Fourth Proportional to 2,308.73, 3,462.88 and 921.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.73 : 3,462.88 = 921.70 : x
2. Step 2: Convert to fraction form
   2,308.73/3,462.88 = 921.70/x
3. Step 3: Cross multiply
   2,308.73x = 3,462.88 × 921.70
4. Step 4: Simplify right side
   2,308.73x = 3,191,736.50
5. Step 5: Solve for x
   x = 3,191,736.50/2,308.73
6. Step 6: Final answer
   x = 1,382.46