Finding the Fourth Proportional to 1,054.01, 1,454.42 and 611.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.01 : 1,454.42 = 611.89 : x
2. Step 2: Convert to fraction form
   1,054.01/1,454.42 = 611.89/x
3. Step 3: Cross multiply
   1,054.01x = 1,454.42 × 611.89
4. Step 4: Simplify right side
   1,054.01x = 889,934.72
5. Step 5: Solve for x
   x = 889,934.72/1,054.01
6. Step 6: Final answer
   x = 844.33