Finding the Fourth Proportional to 1,075.86, 1,484.82 and 633.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.86 : 1,484.82 = 633.78 : x
2. Step 2: Convert to fraction form
   1,075.86/1,484.82 = 633.78/x
3. Step 3: Cross multiply
   1,075.86x = 1,484.82 × 633.78
4. Step 4: Simplify right side
   1,075.86x = 941,049.22
5. Step 5: Solve for x
   x = 941,049.22/1,075.86
6. Step 6: Final answer
   x = 874.69