Finding the Fourth Proportional to 1,648.55, 2,274.84 and 902.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.55 : 2,274.84 = 902.51 : x
2. Step 2: Convert to fraction form
   1,648.55/2,274.84 = 902.51/x
3. Step 3: Cross multiply
   1,648.55x = 2,274.84 × 902.51
4. Step 4: Simplify right side
   1,648.55x = 2,053,054.47
5. Step 5: Solve for x
   x = 2,053,054.47/1,648.55
6. Step 6: Final answer
   x = 1,245.37