Finding the Fourth Proportional to 837.98, 1,156.52 and 488.69

Step by Step Solution

1. Step 1: Write the proportion equation
   837.98 : 1,156.52 = 488.69 : x
2. Step 2: Convert to fraction form
   837.98/1,156.52 = 488.69/x
3. Step 3: Cross multiply
   837.98x = 1,156.52 × 488.69
4. Step 4: Simplify right side
   837.98x = 565,179.76
5. Step 5: Solve for x
   x = 565,179.76/837.98
6. Step 6: Final answer
   x = 674.45