Finding the Fourth Proportional to 1,653.06, 2,281.71 and 945.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,653.06 : 2,281.71 = 945.31 : x
2. Step 2: Convert to fraction form
   1,653.06/2,281.71 = 945.31/x
3. Step 3: Cross multiply
   1,653.06x = 2,281.71 × 945.31
4. Step 4: Simplify right side
   1,653.06x = 2,156,921.53
5. Step 5: Solve for x
   x = 2,156,921.53/1,653.06
6. Step 6: Final answer
   x = 1,304.80