Finding the Fourth Proportional to 1,055.94, 1,457.01 and 636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.94 : 1,457.01 = 636.18 : x
2. Step 2: Convert to fraction form
   1,055.94/1,457.01 = 636.18/x
3. Step 3: Cross multiply
   1,055.94x = 1,457.01 × 636.18
4. Step 4: Simplify right side
   1,055.94x = 926,920.62
5. Step 5: Solve for x
   x = 926,920.62/1,055.94
6. Step 6: Final answer
   x = 877.82