Finding the Fourth Proportional to 1,809.76, 2,498.16 and 1,111

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.76 : 2,498.16 = 1,111 : x
2. Step 2: Convert to fraction form
   1,809.76/2,498.16 = 1,111/x
3. Step 3: Cross multiply
   1,809.76x = 2,498.16 × 1,111
4. Step 4: Simplify right side
   1,809.76x = 2,775,455.76
5. Step 5: Solve for x
   x = 2,775,455.76/1,809.76
6. Step 6: Final answer
   x = 1,533.60