Finding the Fourth Proportional to 3,656.98, 5,046.61 and 1,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,656.98 : 5,046.61 = 1,978.37 : x
2. Step 2: Convert to fraction form
   3,656.98/5,046.61 = 1,978.37/x
3. Step 3: Cross multiply
   3,656.98x = 5,046.61 × 1,978.37
4. Step 4: Simplify right side
   3,656.98x = 9,984,069.50
5. Step 5: Solve for x
   x = 9,984,069.50/3,656.98
6. Step 6: Final answer
   x = 2,730.14