Finding the Fourth Proportional to 2,073.60, 3,109.32 and 976.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.60 : 3,109.32 = 976.86 : x
2. Step 2: Convert to fraction form
   2,073.60/3,109.32 = 976.86/x
3. Step 3: Cross multiply
   2,073.60x = 3,109.32 × 976.86
4. Step 4: Simplify right side
   2,073.60x = 3,037,370.34
5. Step 5: Solve for x
   x = 3,037,370.34/2,073.60
6. Step 6: Final answer
   x = 1,464.78