Finding the Fourth Proportional to 2,061.07, 3,091.60 and 522.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.07 : 3,091.60 = 522.07 : x
2. Step 2: Convert to fraction form
   2,061.07/3,091.60 = 522.07/x
3. Step 3: Cross multiply
   2,061.07x = 3,091.60 × 522.07
4. Step 4: Simplify right side
   2,061.07x = 1,614,016.15
5. Step 5: Solve for x
   x = 1,614,016.15/2,061.07
6. Step 6: Final answer
   x = 783.10