Finding the Fourth Proportional to 1,897.82, 2,618.79 and 1,111.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.82 : 2,618.79 = 1,111.90 : x
2. Step 2: Convert to fraction form
   1,897.82/2,618.79 = 1,111.90/x
3. Step 3: Cross multiply
   1,897.82x = 2,618.79 × 1,111.90
4. Step 4: Simplify right side
   1,897.82x = 2,911,832.60
5. Step 5: Solve for x
   x = 2,911,832.60/1,897.82
6. Step 6: Final answer
   x = 1,534.30