Finding the Fourth Proportional to 1,553.30, 2,320.52 and 1,111.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.30 : 2,320.52 = 1,111.04 : x
2. Step 2: Convert to fraction form
   1,553.30/2,320.52 = 1,111.04/x
3. Step 3: Cross multiply
   1,553.30x = 2,320.52 × 1,111.04
4. Step 4: Simplify right side
   1,553.30x = 2,578,190.54
5. Step 5: Solve for x
   x = 2,578,190.54/1,553.30
6. Step 6: Final answer
   x = 1,659.81