Finding the Fourth Proportional to 2,616.61, 3,610.78 and 1,437.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.61 : 3,610.78 = 1,437.45 : x
2. Step 2: Convert to fraction form
   2,616.61/3,610.78 = 1,437.45/x
3. Step 3: Cross multiply
   2,616.61x = 3,610.78 × 1,437.45
4. Step 4: Simplify right side
   2,616.61x = 5,190,315.71
5. Step 5: Solve for x
   x = 5,190,315.71/2,616.61
6. Step 6: Final answer
   x = 1,983.60