Finding the Fourth Proportional to 3,123.01, 4,683.20 and 1,272.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.01 : 4,683.20 = 1,272.86 : x
2. Step 2: Convert to fraction form
   3,123.01/4,683.20 = 1,272.86/x
3. Step 3: Cross multiply
   3,123.01x = 4,683.20 × 1,272.86
4. Step 4: Simplify right side
   3,123.01x = 5,961,057.95
5. Step 5: Solve for x
   x = 5,961,057.95/3,123.01
6. Step 6: Final answer
   x = 1,908.75