Finding the Fourth Proportional to 1,053.98, 1,454.18 and 611.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.98 : 1,454.18 = 611.62 : x
2. Step 2: Convert to fraction form
   1,053.98/1,454.18 = 611.62/x
3. Step 3: Cross multiply
   1,053.98x = 1,454.18 × 611.62
4. Step 4: Simplify right side
   1,053.98x = 889,405.57
5. Step 5: Solve for x
   x = 889,405.57/1,053.98
6. Step 6: Final answer
   x = 843.85