Finding the Fourth Proportional to 3,667.39, 5,060.86 and 1,988.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.39 : 5,060.86 = 1,988.77 : x
2. Step 2: Convert to fraction form
   3,667.39/5,060.86 = 1,988.77/x
3. Step 3: Cross multiply
   3,667.39x = 5,060.86 × 1,988.77
4. Step 4: Simplify right side
   3,667.39x = 10,064,851.29
5. Step 5: Solve for x
   x = 10,064,851.29/3,667.39
6. Step 6: Final answer
   x = 2,744.42