Finding the Fourth Proportional to 1,649.90, 2,276.82 and 903.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,649.90 : 2,276.82 = 903.89 : x
2. Step 2: Convert to fraction form
   1,649.90/2,276.82 = 903.89/x
3. Step 3: Cross multiply
   1,649.90x = 2,276.82 × 903.89
4. Step 4: Simplify right side
   1,649.90x = 2,057,983.45
5. Step 5: Solve for x
   x = 2,057,983.45/1,649.90
6. Step 6: Final answer
   x = 1,247.34