Finding the Fourth Proportional to 1,897.22, 2,618.18 and 1,111.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.22 : 2,618.18 = 1,111.29 : x
2. Step 2: Convert to fraction form
   1,897.22/2,618.18 = 1,111.29/x
3. Step 3: Cross multiply
   1,897.22x = 2,618.18 × 1,111.29
4. Step 4: Simplify right side
   1,897.22x = 2,909,551.70
5. Step 5: Solve for x
   x = 2,909,551.70/1,897.22
6. Step 6: Final answer
   x = 1,533.59