Finding the Fourth Proportional to 2,539.76, 3,505.61 and 1,477.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.76 : 3,505.61 = 1,477.77 : x
2. Step 2: Convert to fraction form
   2,539.76/3,505.61 = 1,477.77/x
3. Step 3: Cross multiply
   2,539.76x = 3,505.61 × 1,477.77
4. Step 4: Simplify right side
   2,539.76x = 5,180,485.29
5. Step 5: Solve for x
   x = 5,180,485.29/2,539.76
6. Step 6: Final answer
   x = 2,039.75