Finding the Fourth Proportional to 1,055.82, 1,457.34 and 613.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.82 : 1,457.34 = 613.89 : x
2. Step 2: Convert to fraction form
   1,055.82/1,457.34 = 613.89/x
3. Step 3: Cross multiply
   1,055.82x = 1,457.34 × 613.89
4. Step 4: Simplify right side
   1,055.82x = 894,646.45
5. Step 5: Solve for x
   x = 894,646.45/1,055.82
6. Step 6: Final answer
   x = 847.35