Finding the Fourth Proportional to 1,055.69, 1,456.61 and 635.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.69 : 1,456.61 = 635.93 : x
2. Step 2: Convert to fraction form
   1,055.69/1,456.61 = 635.93/x
3. Step 3: Cross multiply
   1,055.69x = 1,456.61 × 635.93
4. Step 4: Simplify right side
   1,055.69x = 926,298.82
5. Step 5: Solve for x
   x = 926,298.82/1,055.69
6. Step 6: Final answer
   x = 877.43