Finding the Fourth Proportional to 2,574.18, 3,551.58 and 1,577.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.18 : 3,551.58 = 1,577.88 : x
2. Step 2: Convert to fraction form
   2,574.18/3,551.58 = 1,577.88/x
3. Step 3: Cross multiply
   2,574.18x = 3,551.58 × 1,577.88
4. Step 4: Simplify right side
   2,574.18x = 5,603,967.05
5. Step 5: Solve for x
   x = 5,603,967.05/2,574.18
6. Step 6: Final answer
   x = 2,176.99