Finding the Fourth Proportional to 1,026.82, 1,541.94 and 637.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.82 : 1,541.94 = 637.57 : x
2. Step 2: Convert to fraction form
   1,026.82/1,541.94 = 637.57/x
3. Step 3: Cross multiply
   1,026.82x = 1,541.94 × 637.57
4. Step 4: Simplify right side
   1,026.82x = 983,094.69
5. Step 5: Solve for x
   x = 983,094.69/1,026.82
6. Step 6: Final answer
   x = 957.42