Finding the Fourth Proportional to 2,072.68, 3,109.38 and 1,046.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.68 : 3,109.38 = 1,046.68 : x
2. Step 2: Convert to fraction form
   2,072.68/3,109.38 = 1,046.68/x
3. Step 3: Cross multiply
   2,072.68x = 3,109.38 × 1,046.68
4. Step 4: Simplify right side
   2,072.68x = 3,254,525.86
5. Step 5: Solve for x
   x = 3,254,525.86/2,072.68
6. Step 6: Final answer
   x = 1,570.20