Finding the Fourth Proportional to 1,871.48, 2,805.39 and 897.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.48 : 2,805.39 = 897.05 : x
2. Step 2: Convert to fraction form
   1,871.48/2,805.39 = 897.05/x
3. Step 3: Cross multiply
   1,871.48x = 2,805.39 × 897.05
4. Step 4: Simplify right side
   1,871.48x = 2,516,561.07
5. Step 5: Solve for x
   x = 2,516,561.07/1,871.48
6. Step 6: Final answer
   x = 1,344.69