Finding the Fourth Proportional to 2,661.73, 3,992.61 and 930.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.73 : 3,992.61 = 930.34 : x
2. Step 2: Convert to fraction form
   2,661.73/3,992.61 = 930.34/x
3. Step 3: Cross multiply
   2,661.73x = 3,992.61 × 930.34
4. Step 4: Simplify right side
   2,661.73x = 3,714,484.79
5. Step 5: Solve for x
   x = 3,714,484.79/2,661.73
6. Step 6: Final answer
   x = 1,395.52