Finding the Fourth Proportional to 1,897.09, 2,617.72 and 1,111.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.09 : 2,617.72 = 1,111.39 : x
2. Step 2: Convert to fraction form
   1,897.09/2,617.72 = 1,111.39/x
3. Step 3: Cross multiply
   1,897.09x = 2,617.72 × 1,111.39
4. Step 4: Simplify right side
   1,897.09x = 2,909,307.83
5. Step 5: Solve for x
   x = 2,909,307.83/1,897.09
6. Step 6: Final answer
   x = 1,533.56