Finding the Fourth Proportional to 2,030.77, 2,801.55 and 1,781.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,030.77 : 2,801.55 = 1,781.33 : x
2. Step 2: Convert to fraction form
   2,030.77/2,801.55 = 1,781.33/x
3. Step 3: Cross multiply
   2,030.77x = 2,801.55 × 1,781.33
4. Step 4: Simplify right side
   2,030.77x = 4,990,477.73
5. Step 5: Solve for x
   x = 4,990,477.73/2,030.77
6. Step 6: Final answer
   x = 2,457.43