Finding the Fourth Proportional to 1,209.31, 1,814.57 and 560.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209.31 : 1,814.57 = 560.50 : x
2. Step 2: Convert to fraction form
   1,209.31/1,814.57 = 560.50/x
3. Step 3: Cross multiply
   1,209.31x = 1,814.57 × 560.50
4. Step 4: Simplify right side
   1,209.31x = 1,017,066.49
5. Step 5: Solve for x
   x = 1,017,066.49/1,209.31
6. Step 6: Final answer
   x = 841.03