Finding the Fourth Proportional to 2,666.80, 3,679.82 and 1,487.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.80 : 3,679.82 = 1,487.72 : x
2. Step 2: Convert to fraction form
   2,666.80/3,679.82 = 1,487.72/x
3. Step 3: Cross multiply
   2,666.80x = 3,679.82 × 1,487.72
4. Step 4: Simplify right side
   2,666.80x = 5,474,541.81
5. Step 5: Solve for x
   x = 5,474,541.81/2,666.80
6. Step 6: Final answer
   x = 2,052.85