Finding the Fourth Proportional to 2,225.31, 3,070.82 and 1,230.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.31 : 3,070.82 = 1,230.50 : x
2. Step 2: Convert to fraction form
   2,225.31/3,070.82 = 1,230.50/x
3. Step 3: Cross multiply
   2,225.31x = 3,070.82 × 1,230.50
4. Step 4: Simplify right side
   2,225.31x = 3,778,622.50
5. Step 5: Solve for x
   x = 3,778,622.50/2,225.31
6. Step 6: Final answer
   x = 1,698.02