Finding the Fourth Proportional to 4,686.96, 7,031.52 and 1,399.98

Step by Step Solution

1. Step 1: Write the proportion equation
   4,686.96 : 7,031.52 = 1,399.98 : x
2. Step 2: Convert to fraction form
   4,686.96/7,031.52 = 1,399.98/x
3. Step 3: Cross multiply
   4,686.96x = 7,031.52 × 1,399.98
4. Step 4: Simplify right side
   4,686.96x = 9,843,987.37
5. Step 5: Solve for x
   x = 9,843,987.37/4,686.96
6. Step 6: Final answer
   x = 2,100.29