Finding the Fourth Proportional to 1,897.92, 2,618.40 and 1,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.92 : 2,618.40 = 1,111.68 : x
2. Step 2: Convert to fraction form
   1,897.92/2,618.40 = 1,111.68/x
3. Step 3: Cross multiply
   1,897.92x = 2,618.40 × 1,111.68
4. Step 4: Simplify right side
   1,897.92x = 2,910,822.91
5. Step 5: Solve for x
   x = 2,910,822.91/1,897.92
6. Step 6: Final answer
   x = 1,533.69