Finding the Fourth Proportional to 2,538.20, 3,503.05 and 1,656.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.20 : 3,503.05 = 1,656.57 : x
2. Step 2: Convert to fraction form
   2,538.20/3,503.05 = 1,656.57/x
3. Step 3: Cross multiply
   2,538.20x = 3,503.05 × 1,656.57
4. Step 4: Simplify right side
   2,538.20x = 5,803,036.83
5. Step 5: Solve for x
   x = 5,803,036.83/2,538.20
6. Step 6: Final answer
   x = 2,286.28