Finding the Fourth Proportional to 2,051.20, 2,805.77 and 2,002.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.20 : 2,805.77 = 2,002.60 : x
2. Step 2: Convert to fraction form
   2,051.20/2,805.77 = 2,002.60/x
3. Step 3: Cross multiply
   2,051.20x = 2,805.77 × 2,002.60
4. Step 4: Simplify right side
   2,051.20x = 5,618,835.00
5. Step 5: Solve for x
   x = 5,618,835.00/2,051.20
6. Step 6: Final answer
   x = 2,739.29