Finding the Fourth Proportional to 2,010.96, 2,775.15 and 1,225.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.96 : 2,775.15 = 1,225.08 : x
2. Step 2: Convert to fraction form
   2,010.96/2,775.15 = 1,225.08/x
3. Step 3: Cross multiply
   2,010.96x = 2,775.15 × 1,225.08
4. Step 4: Simplify right side
   2,010.96x = 3,399,780.76
5. Step 5: Solve for x
   x = 3,399,780.76/2,010.96
6. Step 6: Final answer
   x = 1,690.63