Finding the Fourth Proportional to 1,361.94, 2,039.42 and 898.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.94 : 2,039.42 = 898.31 : x
2. Step 2: Convert to fraction form
   1,361.94/2,039.42 = 898.31/x
3. Step 3: Cross multiply
   1,361.94x = 2,039.42 × 898.31
4. Step 4: Simplify right side
   1,361.94x = 1,832,031.38
5. Step 5: Solve for x
   x = 1,832,031.38/1,361.94
6. Step 6: Final answer
   x = 1,345.16