Finding the Fourth Proportional to 2,040.66, 2,830.55 and 1,970.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.66 : 2,830.55 = 1,970.72 : x
2. Step 2: Convert to fraction form
   2,040.66/2,830.55 = 1,970.72/x
3. Step 3: Cross multiply
   2,040.66x = 2,830.55 × 1,970.72
4. Step 4: Simplify right side
   2,040.66x = 5,578,221.50
5. Step 5: Solve for x
   x = 5,578,221.50/2,040.66
6. Step 6: Final answer
   x = 2,733.54