Finding the Fourth Proportional to 2,014.64, 2,778.59 and 1,620.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,014.64 : 2,778.59 = 1,620.98 : x
2. Step 2: Convert to fraction form
   2,014.64/2,778.59 = 1,620.98/x
3. Step 3: Cross multiply
   2,014.64x = 2,778.59 × 1,620.98
4. Step 4: Simplify right side
   2,014.64x = 4,504,038.82
5. Step 5: Solve for x
   x = 4,504,038.82/2,014.64
6. Step 6: Final answer
   x = 2,235.65