Finding the Fourth Proportional to 1,057.51, 1,459.88 and 704.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.51 : 1,459.88 = 704.02 : x
2. Step 2: Convert to fraction form
   1,057.51/1,459.88 = 704.02/x
3. Step 3: Cross multiply
   1,057.51x = 1,459.88 × 704.02
4. Step 4: Simplify right side
   1,057.51x = 1,027,777.55
5. Step 5: Solve for x
   x = 1,027,777.55/1,057.51
6. Step 6: Final answer
   x = 971.89