Finding the Fourth Proportional to 4,674.39, 7,010.38 and 1,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,674.39 : 7,010.38 = 1,386.72 : x
2. Step 2: Convert to fraction form
   4,674.39/7,010.38 = 1,386.72/x
3. Step 3: Cross multiply
   4,674.39x = 7,010.38 × 1,386.72
4. Step 4: Simplify right side
   4,674.39x = 9,721,435.89
5. Step 5: Solve for x
   x = 9,721,435.89/4,674.39
6. Step 6: Final answer
   x = 2,079.72