Finding the Fourth Proportional to 1,931.42, 2,664.47 and 1,144.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.42 : 2,664.47 = 1,144.86 : x
2. Step 2: Convert to fraction form
   1,931.42/2,664.47 = 1,144.86/x
3. Step 3: Cross multiply
   1,931.42x = 2,664.47 × 1,144.86
4. Step 4: Simplify right side
   1,931.42x = 3,050,445.12
5. Step 5: Solve for x
   x = 3,050,445.12/1,931.42
6. Step 6: Final answer
   x = 1,579.38