Finding the Fourth Proportional to 1,274.71, 1,912.37 and 624.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274.71 : 1,912.37 = 624.69 : x
2. Step 2: Convert to fraction form
   1,274.71/1,912.37 = 624.69/x
3. Step 3: Cross multiply
   1,274.71x = 1,912.37 × 624.69
4. Step 4: Simplify right side
   1,274.71x = 1,194,638.42
5. Step 5: Solve for x
   x = 1,194,638.42/1,274.71
6. Step 6: Final answer
   x = 937.18