Finding the Fourth Proportional to 1,354.78, 2,030.34 and 704.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.78 : 2,030.34 = 704.20 : x
2. Step 2: Convert to fraction form
   1,354.78/2,030.34 = 704.20/x
3. Step 3: Cross multiply
   1,354.78x = 2,030.34 × 704.20
4. Step 4: Simplify right side
   1,354.78x = 1,429,765.43
5. Step 5: Solve for x
   x = 1,429,765.43/1,354.78
6. Step 6: Final answer
   x = 1,055.35