Finding the Fourth Proportional to 2,118.52, 3,174.90 and 1,572.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.52 : 3,174.90 = 1,572.76 : x
2. Step 2: Convert to fraction form
   2,118.52/3,174.90 = 1,572.76/x
3. Step 3: Cross multiply
   2,118.52x = 3,174.90 × 1,572.76
4. Step 4: Simplify right side
   2,118.52x = 4,993,355.72
5. Step 5: Solve for x
   x = 4,993,355.72/2,118.52
6. Step 6: Final answer
   x = 2,357.00