Finding the Fourth Proportional to 1,897.86, 2,618.19 and 1,111.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.86 : 2,618.19 = 1,111.58 : x
2. Step 2: Convert to fraction form
   1,897.86/2,618.19 = 1,111.58/x
3. Step 3: Cross multiply
   1,897.86x = 2,618.19 × 1,111.58
4. Step 4: Simplify right side
   1,897.86x = 2,910,314.55
5. Step 5: Solve for x
   x = 2,910,314.55/1,897.86
6. Step 6: Final answer
   x = 1,533.47