Finding the Fourth Proportional to 2,666.48, 3,679.82 and 1,487.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.48 : 3,679.82 = 1,487.78 : x
2. Step 2: Convert to fraction form
   2,666.48/3,679.82 = 1,487.78/x
3. Step 3: Cross multiply
   2,666.48x = 3,679.82 × 1,487.78
4. Step 4: Simplify right side
   2,666.48x = 5,474,762.60
5. Step 5: Solve for x
   x = 5,474,762.60/2,666.48
6. Step 6: Final answer
   x = 2,053.18