Finding the Fourth Proportional to 1,054.25, 1,455.00 and 612.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.25 : 1,455.00 = 612.17 : x
2. Step 2: Convert to fraction form
   1,054.25/1,455.00 = 612.17/x
3. Step 3: Cross multiply
   1,054.25x = 1,455.00 × 612.17
4. Step 4: Simplify right side
   1,054.25x = 890,711.42
5. Step 5: Solve for x
   x = 890,711.42/1,054.25
6. Step 6: Final answer
   x = 844.88