Finding the Fourth Proportional to 1,051.41, 1,450.89 and 579.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.41 : 1,450.89 = 579.31 : x
2. Step 2: Convert to fraction form
   1,051.41/1,450.89 = 579.31/x
3. Step 3: Cross multiply
   1,051.41x = 1,450.89 × 579.31
4. Step 4: Simplify right side
   1,051.41x = 840,511.46
5. Step 5: Solve for x
   x = 840,511.46/1,051.41
6. Step 6: Final answer
   x = 799.41