Finding the Fourth Proportional to 3,607.67, 5,410.62 and 1,386.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.67 : 5,410.62 = 1,386.05 : x
2. Step 2: Convert to fraction form
   3,607.67/5,410.62 = 1,386.05/x
3. Step 3: Cross multiply
   3,607.67x = 5,410.62 × 1,386.05
4. Step 4: Simplify right side
   3,607.67x = 7,499,389.85
5. Step 5: Solve for x
   x = 7,499,389.85/3,607.67
6. Step 6: Final answer
   x = 2,078.73