Finding the Fourth Proportional to 2,888.56, 4,332.46 and 1,039.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,888.56 : 4,332.46 = 1,039.42 : x
2. Step 2: Convert to fraction form
   2,888.56/4,332.46 = 1,039.42/x
3. Step 3: Cross multiply
   2,888.56x = 4,332.46 × 1,039.42
4. Step 4: Simplify right side
   2,888.56x = 4,503,245.57
5. Step 5: Solve for x
   x = 4,503,245.57/2,888.56
6. Step 6: Final answer
   x = 1,558.99