Finding the Fourth Proportional to 2,061.78, 3,089.93 and 1,786.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.78 : 3,089.93 = 1,786.58 : x
2. Step 2: Convert to fraction form
   2,061.78/3,089.93 = 1,786.58/x
3. Step 3: Cross multiply
   2,061.78x = 3,089.93 × 1,786.58
4. Step 4: Simplify right side
   2,061.78x = 5,520,419.33
5. Step 5: Solve for x
   x = 5,520,419.33/2,061.78
6. Step 6: Final answer
   x = 2,677.50