Finding the Fourth Proportional to 3,667.55, 5,061.26 and 1,988.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.55 : 5,061.26 = 1,988.96 : x
2. Step 2: Convert to fraction form
   3,667.55/5,061.26 = 1,988.96/x
3. Step 3: Cross multiply
   3,667.55x = 5,061.26 × 1,988.96
4. Step 4: Simplify right side
   3,667.55x = 10,066,608.44
5. Step 5: Solve for x
   x = 10,066,608.44/3,667.55
6. Step 6: Final answer
   x = 2,744.78