Finding the Fourth Proportional to 2,199.35, 3,298.32 and 1,158.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.35 : 3,298.32 = 1,158.77 : x
2. Step 2: Convert to fraction form
   2,199.35/3,298.32 = 1,158.77/x
3. Step 3: Cross multiply
   2,199.35x = 3,298.32 × 1,158.77
4. Step 4: Simplify right side
   2,199.35x = 3,821,994.27
5. Step 5: Solve for x
   x = 3,821,994.27/2,199.35
6. Step 6: Final answer
   x = 1,737.78