Finding the Fourth Proportional to 1,051.97, 1,451.72 and 579.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.97 : 1,451.72 = 579.86 : x
2. Step 2: Convert to fraction form
   1,051.97/1,451.72 = 579.86/x
3. Step 3: Cross multiply
   1,051.97x = 1,451.72 × 579.86
4. Step 4: Simplify right side
   1,051.97x = 841,787.10
5. Step 5: Solve for x
   x = 841,787.10/1,051.97
6. Step 6: Final answer
   x = 800.20