Finding the Fourth Proportional to 1,041.84, 1,562.72 and 425.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.84 : 1,562.72 = 425.34 : x
2. Step 2: Convert to fraction form
   1,041.84/1,562.72 = 425.34/x
3. Step 3: Cross multiply
   1,041.84x = 1,562.72 × 425.34
4. Step 4: Simplify right side
   1,041.84x = 664,685.20
5. Step 5: Solve for x
   x = 664,685.20/1,041.84
6. Step 6: Final answer
   x = 637.99