Finding the Fourth Proportional to 1,045.58, 1,442.90 and 573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.58 : 1,442.90 = 573.50 : x
2. Step 2: Convert to fraction form
   1,045.58/1,442.90 = 573.50/x
3. Step 3: Cross multiply
   1,045.58x = 1,442.90 × 573.50
4. Step 4: Simplify right side
   1,045.58x = 827,503.89
5. Step 5: Solve for x
   x = 827,503.89/1,045.58
6. Step 6: Final answer
   x = 791.43