Finding the Fourth Proportional to 1,078.00, 1,487.85 and 704.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.00 : 1,487.85 = 704.30 : x
2. Step 2: Convert to fraction form
   1,078.00/1,487.85 = 704.30/x
3. Step 3: Cross multiply
   1,078.00x = 1,487.85 × 704.30
4. Step 4: Simplify right side
   1,078.00x = 1,047,892.76
5. Step 5: Solve for x
   x = 1,047,892.76/1,078.00
6. Step 6: Final answer
   x = 972.08