Finding the Fourth Proportional to 1,654.86, 2,481.56 and 777.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,654.86 : 2,481.56 = 777.61 : x
2. Step 2: Convert to fraction form
   1,654.86/2,481.56 = 777.61/x
3. Step 3: Cross multiply
   1,654.86x = 2,481.56 × 777.61
4. Step 4: Simplify right side
   1,654.86x = 1,929,677.72
5. Step 5: Solve for x
   x = 1,929,677.72/1,654.86
6. Step 6: Final answer
   x = 1,166.07