Finding the Fourth Proportional to 2,892.34, 4,338.59 and 917.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.34 : 4,338.59 = 917.97 : x
2. Step 2: Convert to fraction form
   2,892.34/4,338.59 = 917.97/x
3. Step 3: Cross multiply
   2,892.34x = 4,338.59 × 917.97
4. Step 4: Simplify right side
   2,892.34x = 3,982,706.31
5. Step 5: Solve for x
   x = 3,982,706.31/2,892.34
6. Step 6: Final answer
   x = 1,376.99