Finding the Fourth Proportional to 2,989.07, 4,483.42 and 1,140.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.07 : 4,483.42 = 1,140.37 : x
2. Step 2: Convert to fraction form
   2,989.07/4,483.42 = 1,140.37/x
3. Step 3: Cross multiply
   2,989.07x = 4,483.42 × 1,140.37
4. Step 4: Simplify right side
   2,989.07x = 5,112,747.88
5. Step 5: Solve for x
   x = 5,112,747.88/2,989.07
6. Step 6: Final answer
   x = 1,710.48