Finding the Fourth Proportional to 1,225.89, 1,692.27 and 833.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.89 : 1,692.27 = 833.13 : x
2. Step 2: Convert to fraction form
   1,225.89/1,692.27 = 833.13/x
3. Step 3: Cross multiply
   1,225.89x = 1,692.27 × 833.13
4. Step 4: Simplify right side
   1,225.89x = 1,409,880.91
5. Step 5: Solve for x
   x = 1,409,880.91/1,225.89
6. Step 6: Final answer
   x = 1,150.09