Finding the Fourth Proportional to 2,357.80, 3,538.10 and 897.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.80 : 3,538.10 = 897.10 : x
2. Step 2: Convert to fraction form
   2,357.80/3,538.10 = 897.10/x
3. Step 3: Cross multiply
   2,357.80x = 3,538.10 × 897.10
4. Step 4: Simplify right side
   2,357.80x = 3,174,029.51
5. Step 5: Solve for x
   x = 3,174,029.51/2,357.80
6. Step 6: Final answer
   x = 1,346.18