Finding the Fourth Proportional to 3,577.17, 5,366.60 and 1,111.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,577.17 : 5,366.60 = 1,111.86 : x
2. Step 2: Convert to fraction form
   3,577.17/5,366.60 = 1,111.86/x
3. Step 3: Cross multiply
   3,577.17x = 5,366.60 × 1,111.86
4. Step 4: Simplify right side
   3,577.17x = 5,966,902.32
5. Step 5: Solve for x
   x = 5,966,902.32/3,577.17
6. Step 6: Final answer
   x = 1,668.05