Finding the Fourth Proportional to 1,212.61, 1,810.69 and 963.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.61 : 1,810.69 = 963.01 : x
2. Step 2: Convert to fraction form
   1,212.61/1,810.69 = 963.01/x
3. Step 3: Cross multiply
   1,212.61x = 1,810.69 × 963.01
4. Step 4: Simplify right side
   1,212.61x = 1,743,706.55
5. Step 5: Solve for x
   x = 1,743,706.55/1,212.61
6. Step 6: Final answer
   x = 1,437.98