Finding the Fourth Proportional to 1,485.77, 2,229.15 and 937.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.77 : 2,229.15 = 937.31 : x
2. Step 2: Convert to fraction form
   1,485.77/2,229.15 = 937.31/x
3. Step 3: Cross multiply
   1,485.77x = 2,229.15 × 937.31
4. Step 4: Simplify right side
   1,485.77x = 2,089,404.59
5. Step 5: Solve for x
   x = 2,089,404.59/1,485.77
6. Step 6: Final answer
   x = 1,406.28