Finding the Fourth Proportional to 2,010.81, 2,773.98 and 1,225.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.81 : 2,773.98 = 1,225.32 : x
2. Step 2: Convert to fraction form
   2,010.81/2,773.98 = 1,225.32/x
3. Step 3: Cross multiply
   2,010.81x = 2,773.98 × 1,225.32
4. Step 4: Simplify right side
   2,010.81x = 3,399,013.17
5. Step 5: Solve for x
   x = 3,399,013.17/2,010.81
6. Step 6: Final answer
   x = 1,690.37