Finding the Fourth Proportional to 1,053.88, 1,454.42 and 611.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.88 : 1,454.42 = 611.82 : x
2. Step 2: Convert to fraction form
   1,053.88/1,454.42 = 611.82/x
3. Step 3: Cross multiply
   1,053.88x = 1,454.42 × 611.82
4. Step 4: Simplify right side
   1,053.88x = 889,844.77
5. Step 5: Solve for x
   x = 889,844.77/1,053.88
6. Step 6: Final answer
   x = 844.35