Finding the Fourth Proportional to 1,051.79, 1,451.45 and 579.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.79 : 1,451.45 = 579.69 : x
2. Step 2: Convert to fraction form
   1,051.79/1,451.45 = 579.69/x
3. Step 3: Cross multiply
   1,051.79x = 1,451.45 × 579.69
4. Step 4: Simplify right side
   1,051.79x = 841,392.50
5. Step 5: Solve for x
   x = 841,392.50/1,051.79
6. Step 6: Final answer
   x = 799.97