Finding the Fourth Proportional to 1,255.73, 1,881.50 and 561.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.73 : 1,881.50 = 561.33 : x
2. Step 2: Convert to fraction form
   1,255.73/1,881.50 = 561.33/x
3. Step 3: Cross multiply
   1,255.73x = 1,881.50 × 561.33
4. Step 4: Simplify right side
   1,255.73x = 1,056,139.59
5. Step 5: Solve for x
   x = 1,056,139.59/1,255.73
6. Step 6: Final answer
   x = 841.06