Finding the Fourth Proportional to 1,631.30, 2,443.88 and 1,264.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631.30 : 2,443.88 = 1,264.30 : x
2. Step 2: Convert to fraction form
   1,631.30/2,443.88 = 1,264.30/x
3. Step 3: Cross multiply
   1,631.30x = 2,443.88 × 1,264.30
4. Step 4: Simplify right side
   1,631.30x = 3,089,778.94
5. Step 5: Solve for x
   x = 3,089,778.94/1,631.30
6. Step 6: Final answer
   x = 1,894.06