Finding the Fourth Proportional to 2,599.92, 3,897.72 and 1,777.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.92 : 3,897.72 = 1,777.05 : x
2. Step 2: Convert to fraction form
   2,599.92/3,897.72 = 1,777.05/x
3. Step 3: Cross multiply
   2,599.92x = 3,897.72 × 1,777.05
4. Step 4: Simplify right side
   2,599.92x = 6,926,443.33
5. Step 5: Solve for x
   x = 6,926,443.33/2,599.92
6. Step 6: Final answer
   x = 2,664.10