Finding the Fourth Proportional to 4,807.89, 7,211.88 and 1,886.49

Step by Step Solution

1. Step 1: Write the proportion equation
   4,807.89 : 7,211.88 = 1,886.49 : x
2. Step 2: Convert to fraction form
   4,807.89/7,211.88 = 1,886.49/x
3. Step 3: Cross multiply
   4,807.89x = 7,211.88 × 1,886.49
4. Step 4: Simplify right side
   4,807.89x = 13,605,139.50
5. Step 5: Solve for x
   x = 13,605,139.50/4,807.89
6. Step 6: Final answer
   x = 2,829.75