Finding the Fourth Proportional to 1,962.21, 2,707.89 and 1,078.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.21 : 2,707.89 = 1,078.01 : x
2. Step 2: Convert to fraction form
   1,962.21/2,707.89 = 1,078.01/x
3. Step 3: Cross multiply
   1,962.21x = 2,707.89 × 1,078.01
4. Step 4: Simplify right side
   1,962.21x = 2,919,132.50
5. Step 5: Solve for x
   x = 2,919,132.50/1,962.21
6. Step 6: Final answer
   x = 1,487.68