Finding the Fourth Proportional to 1,074.57, 1,482.90 and 608.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.57 : 1,482.90 = 608.82 : x
2. Step 2: Convert to fraction form
   1,074.57/1,482.90 = 608.82/x
3. Step 3: Cross multiply
   1,074.57x = 1,482.90 × 608.82
4. Step 4: Simplify right side
   1,074.57x = 902,819.18
5. Step 5: Solve for x
   x = 902,819.18/1,074.57
6. Step 6: Final answer
   x = 840.17