Finding the Fourth Proportional to 1,051.98, 1,451.74 and 579.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.98 : 1,451.74 = 579.89 : x
2. Step 2: Convert to fraction form
   1,051.98/1,451.74 = 579.89/x
3. Step 3: Cross multiply
   1,051.98x = 1,451.74 × 579.89
4. Step 4: Simplify right side
   1,051.98x = 841,850.60
5. Step 5: Solve for x
   x = 841,850.60/1,051.98
6. Step 6: Final answer
   x = 800.26