Finding the Fourth Proportional to 2,225.89, 3,071.73 and 1,231.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.89 : 3,071.73 = 1,231.17 : x
2. Step 2: Convert to fraction form
   2,225.89/3,071.73 = 1,231.17/x
3. Step 3: Cross multiply
   2,225.89x = 3,071.73 × 1,231.17
4. Step 4: Simplify right side
   2,225.89x = 3,781,821.82
5. Step 5: Solve for x
   x = 3,781,821.82/2,225.89
6. Step 6: Final answer
   x = 1,699.02