Finding the Fourth Proportional to 2,991.89, 4,488.56 and 1,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.89 : 4,488.56 = 1,017.50 : x
2. Step 2: Convert to fraction form
   2,991.89/4,488.56 = 1,017.50/x
3. Step 3: Cross multiply
   2,991.89x = 4,488.56 × 1,017.50
4. Step 4: Simplify right side
   2,991.89x = 4,567,082.27
5. Step 5: Solve for x
   x = 4,567,082.27/2,991.89
6. Step 6: Final answer
   x = 1,526.49