Finding the Fourth Proportional to 3,431.39, 5,134.32 and 2,045.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431.39 : 5,134.32 = 2,045.48 : x
2. Step 2: Convert to fraction form
   3,431.39/5,134.32 = 2,045.48/x
3. Step 3: Cross multiply
   3,431.39x = 5,134.32 × 2,045.48
4. Step 4: Simplify right side
   3,431.39x = 10,502,123.20
5. Step 5: Solve for x
   x = 10,502,123.20/3,431.39
6. Step 6: Final answer
   x = 3,060.61