Finding the Fourth Proportional to 3,576.59, 5,364.42 and 1,111.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,576.59 : 5,364.42 = 1,111.35 : x
2. Step 2: Convert to fraction form
   3,576.59/5,364.42 = 1,111.35/x
3. Step 3: Cross multiply
   3,576.59x = 5,364.42 × 1,111.35
4. Step 4: Simplify right side
   3,576.59x = 5,961,748.17
5. Step 5: Solve for x
   x = 5,961,748.17/3,576.59
6. Step 6: Final answer
   x = 1,666.88