Finding the Fourth Proportional to 1,141.16, 1,574.43 and 636.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.16 : 1,574.43 = 636.93 : x
2. Step 2: Convert to fraction form
   1,141.16/1,574.43 = 636.93/x
3. Step 3: Cross multiply
   1,141.16x = 1,574.43 × 636.93
4. Step 4: Simplify right side
   1,141.16x = 1,002,808.22
5. Step 5: Solve for x
   x = 1,002,808.22/1,141.16
6. Step 6: Final answer
   x = 878.76