Finding the Fourth Proportional to 1,611.04, 2,223.15 and 902.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.04 : 2,223.15 = 902.83 : x
2. Step 2: Convert to fraction form
   1,611.04/2,223.15 = 902.83/x
3. Step 3: Cross multiply
   1,611.04x = 2,223.15 × 902.83
4. Step 4: Simplify right side
   1,611.04x = 2,007,126.51
5. Step 5: Solve for x
   x = 2,007,126.51/1,611.04
6. Step 6: Final answer
   x = 1,245.86