Finding the Fourth Proportional to 1,108.02, 1,662.00 and 522.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.02 : 1,662.00 = 522.81 : x
2. Step 2: Convert to fraction form
   1,108.02/1,662.00 = 522.81/x
3. Step 3: Cross multiply
   1,108.02x = 1,662.00 × 522.81
4. Step 4: Simplify right side
   1,108.02x = 868,907.61
5. Step 5: Solve for x
   x = 868,907.61/1,108.02
6. Step 6: Final answer
   x = 784.20