Finding the Fourth Proportional to 2,105.60, 3,156.37 and 1,008.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.60 : 3,156.37 = 1,008.86 : x
2. Step 2: Convert to fraction form
   2,105.60/3,156.37 = 1,008.86/x
3. Step 3: Cross multiply
   2,105.60x = 3,156.37 × 1,008.86
4. Step 4: Simplify right side
   2,105.60x = 3,184,317.13
5. Step 5: Solve for x
   x = 3,184,317.13/2,105.60
6. Step 6: Final answer
   x = 1,512.31