Finding the Fourth Proportional to 2,528.10, 3,486.69 and 1,642.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.10 : 3,486.69 = 1,642.37 : x
2. Step 2: Convert to fraction form
   2,528.10/3,486.69 = 1,642.37/x
3. Step 3: Cross multiply
   2,528.10x = 3,486.69 × 1,642.37
4. Step 4: Simplify right side
   2,528.10x = 5,726,417.62
5. Step 5: Solve for x
   x = 5,726,417.62/2,528.10
6. Step 6: Final answer
   x = 2,265.11