Finding the Fourth Proportional to 2,308.44, 3,463.01 and 921.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.44 : 3,463.01 = 921.72 : x
2. Step 2: Convert to fraction form
   2,308.44/3,463.01 = 921.72/x
3. Step 3: Cross multiply
   2,308.44x = 3,463.01 × 921.72
4. Step 4: Simplify right side
   2,308.44x = 3,191,925.58
5. Step 5: Solve for x
   x = 3,191,925.58/2,308.44
6. Step 6: Final answer
   x = 1,382.72