Finding the Fourth Proportional to 1,073.50, 1,481.46 and 607.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.50 : 1,481.46 = 607.78 : x
2. Step 2: Convert to fraction form
   1,073.50/1,481.46 = 607.78/x
3. Step 3: Cross multiply
   1,073.50x = 1,481.46 × 607.78
4. Step 4: Simplify right side
   1,073.50x = 900,401.76
5. Step 5: Solve for x
   x = 900,401.76/1,073.50
6. Step 6: Final answer
   x = 838.75