Finding the Fourth Proportional to 1,054.00, 1,454.86 and 611.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.00 : 1,454.86 = 611.81 : x
2. Step 2: Convert to fraction form
   1,054.00/1,454.86 = 611.81/x
3. Step 3: Cross multiply
   1,054.00x = 1,454.86 × 611.81
4. Step 4: Simplify right side
   1,054.00x = 890,098.47
5. Step 5: Solve for x
   x = 890,098.47/1,054.00
6. Step 6: Final answer
   x = 844.50