Finding the Fourth Proportional to 1,990.77, 2,741.67 and 1,947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.77 : 2,741.67 = 1,947.72 : x
2. Step 2: Convert to fraction form
   1,990.77/2,741.67 = 1,947.72/x
3. Step 3: Cross multiply
   1,990.77x = 2,741.67 × 1,947.72
4. Step 4: Simplify right side
   1,990.77x = 5,340,005.49
5. Step 5: Solve for x
   x = 5,340,005.49/1,990.77
6. Step 6: Final answer
   x = 2,682.38