Finding the Fourth Proportional to 3,577.68, 5,364.57 and 1,111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,577.68 : 5,364.57 = 1,111.83 : x
2. Step 2: Convert to fraction form
   3,577.68/5,364.57 = 1,111.83/x
3. Step 3: Cross multiply
   3,577.68x = 5,364.57 × 1,111.83
4. Step 4: Simplify right side
   3,577.68x = 5,964,489.86
5. Step 5: Solve for x
   x = 5,964,489.86/3,577.68
6. Step 6: Final answer
   x = 1,667.14