Finding the Fourth Proportional to 1,930.24, 2,893.15 and 1,200.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.24 : 2,893.15 = 1,200.31 : x
2. Step 2: Convert to fraction form
   1,930.24/2,893.15 = 1,200.31/x
3. Step 3: Cross multiply
   1,930.24x = 2,893.15 × 1,200.31
4. Step 4: Simplify right side
   1,930.24x = 3,472,676.88
5. Step 5: Solve for x
   x = 3,472,676.88/1,930.24
6. Step 6: Final answer
   x = 1,799.09