Finding the Fourth Proportional to 2,219.57, 3,061.69 and 1,434.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.57 : 3,061.69 = 1,434.07 : x
2. Step 2: Convert to fraction form
   2,219.57/3,061.69 = 1,434.07/x
3. Step 3: Cross multiply
   2,219.57x = 3,061.69 × 1,434.07
4. Step 4: Simplify right side
   2,219.57x = 4,390,677.78
5. Step 5: Solve for x
   x = 4,390,677.78/2,219.57
6. Step 6: Final answer
   x = 1,978.17