Finding the Fourth Proportional to 3,667.20, 5,060.75 and 1,988.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.20 : 5,060.75 = 1,988.61 : x
2. Step 2: Convert to fraction form
   3,667.20/5,060.75 = 1,988.61/x
3. Step 3: Cross multiply
   3,667.20x = 5,060.75 × 1,988.61
4. Step 4: Simplify right side
   3,667.20x = 10,063,848.11
5. Step 5: Solve for x
   x = 10,063,848.11/3,667.20
6. Step 6: Final answer
   x = 2,744.29