Finding the Fourth Proportional to 1,581.31, 2,371.89 and 607.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.31 : 2,371.89 = 607.35 : x
2. Step 2: Convert to fraction form
   1,581.31/2,371.89 = 607.35/x
3. Step 3: Cross multiply
   1,581.31x = 2,371.89 × 607.35
4. Step 4: Simplify right side
   1,581.31x = 1,440,567.39
5. Step 5: Solve for x
   x = 1,440,567.39/1,581.31
6. Step 6: Final answer
   x = 911.00