Finding the Fourth Proportional to 1,434.31, 1,980.39 and 1,119.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.31 : 1,980.39 = 1,119.94 : x
2. Step 2: Convert to fraction form
   1,434.31/1,980.39 = 1,119.94/x
3. Step 3: Cross multiply
   1,434.31x = 1,980.39 × 1,119.94
4. Step 4: Simplify right side
   1,434.31x = 2,217,917.98
5. Step 5: Solve for x
   x = 2,217,917.98/1,434.31
6. Step 6: Final answer
   x = 1,546.33