Finding the Fourth Proportional to 2,875.50, 4,314.72 and 1,231.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.50 : 4,314.72 = 1,231.60 : x
2. Step 2: Convert to fraction form
   2,875.50/4,314.72 = 1,231.60/x
3. Step 3: Cross multiply
   2,875.50x = 4,314.72 × 1,231.60
4. Step 4: Simplify right side
   2,875.50x = 5,314,009.15
5. Step 5: Solve for x
   x = 5,314,009.15/2,875.50
6. Step 6: Final answer
   x = 1,848.03