Finding the Fourth Proportional to 2,225.67, 3,072.43 and 1,430.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.67 : 3,072.43 = 1,430.15 : x
2. Step 2: Convert to fraction form
   2,225.67/3,072.43 = 1,430.15/x
3. Step 3: Cross multiply
   2,225.67x = 3,072.43 × 1,430.15
4. Step 4: Simplify right side
   2,225.67x = 4,394,035.76
5. Step 5: Solve for x
   x = 4,394,035.76/2,225.67
6. Step 6: Final answer
   x = 1,974.25