Finding the Fourth Proportional to 1,208.34, 1,809.18 and 630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.34 : 1,809.18 = 630 : x
2. Step 2: Convert to fraction form
   1,208.34/1,809.18 = 630/x
3. Step 3: Cross multiply
   1,208.34x = 1,809.18 × 630
4. Step 4: Simplify right side
   1,208.34x = 1,139,783.40
5. Step 5: Solve for x
   x = 1,139,783.40/1,208.34
6. Step 6: Final answer
   x = 943.26