Finding the Fourth Proportional to 1,504.90, 2,076.73 and 841.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,504.90 : 2,076.73 = 841.78 : x
2. Step 2: Convert to fraction form
   1,504.90/2,076.73 = 841.78/x
3. Step 3: Cross multiply
   1,504.90x = 2,076.73 × 841.78
4. Step 4: Simplify right side
   1,504.90x = 1,748,149.78
5. Step 5: Solve for x
   x = 1,748,149.78/1,504.90
6. Step 6: Final answer
   x = 1,161.64