Finding the Fourth Proportional to 3,576.29, 5,364.47 and 1,111.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,576.29 : 5,364.47 = 1,111.05 : x
2. Step 2: Convert to fraction form
   3,576.29/5,364.47 = 1,111.05/x
3. Step 3: Cross multiply
   3,576.29x = 5,364.47 × 1,111.05
4. Step 4: Simplify right side
   3,576.29x = 5,960,197.17
5. Step 5: Solve for x
   x = 5,960,197.17/3,576.29
6. Step 6: Final answer
   x = 1,666.59