Finding the Fourth Proportional to 2,919.12, 4,374.78 and 1,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.12 : 4,374.78 = 1,068.50 : x
2. Step 2: Convert to fraction form
   2,919.12/4,374.78 = 1,068.50/x
3. Step 3: Cross multiply
   2,919.12x = 4,374.78 × 1,068.50
4. Step 4: Simplify right side
   2,919.12x = 4,674,452.43
5. Step 5: Solve for x
   x = 4,674,452.43/2,919.12
6. Step 6: Final answer
   x = 1,601.32