Finding the Fourth Proportional to 1,897.84, 2,618.76 and 1,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.84 : 2,618.76 = 1,111.72 : x
2. Step 2: Convert to fraction form
   1,897.84/2,618.76 = 1,111.72/x
3. Step 3: Cross multiply
   1,897.84x = 2,618.76 × 1,111.72
4. Step 4: Simplify right side
   1,897.84x = 2,911,327.87
5. Step 5: Solve for x
   x = 2,911,327.87/1,897.84
6. Step 6: Final answer
   x = 1,534.02