Finding the Fourth Proportional to 2,225.13, 3,070.83 and 1,230.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.13 : 3,070.83 = 1,230.42 : x
2. Step 2: Convert to fraction form
   2,225.13/3,070.83 = 1,230.42/x
3. Step 3: Cross multiply
   2,225.13x = 3,070.83 × 1,230.42
4. Step 4: Simplify right side
   2,225.13x = 3,778,404.50
5. Step 5: Solve for x
   x = 3,778,404.50/2,225.13
6. Step 6: Final answer
   x = 1,698.06