Finding the Fourth Proportional to 1,227.51, 1,840.59 and 577.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.51 : 1,840.59 = 577.89 : x
2. Step 2: Convert to fraction form
   1,227.51/1,840.59 = 577.89/x
3. Step 3: Cross multiply
   1,227.51x = 1,840.59 × 577.89
4. Step 4: Simplify right side
   1,227.51x = 1,063,658.56
5. Step 5: Solve for x
   x = 1,063,658.56/1,227.51
6. Step 6: Final answer
   x = 866.52