Finding the Fourth Proportional to 2,897.76, 4,345.98 and 817.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,897.76 : 4,345.98 = 817.98 : x
2. Step 2: Convert to fraction form
   2,897.76/4,345.98 = 817.98/x
3. Step 3: Cross multiply
   2,897.76x = 4,345.98 × 817.98
4. Step 4: Simplify right side
   2,897.76x = 3,554,924.72
5. Step 5: Solve for x
   x = 3,554,924.72/2,897.76
6. Step 6: Final answer
   x = 1,226.78