Finding the Fourth Proportional to 2,374.78, 3,276.70 and 1,379.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,374.78 : 3,276.70 = 1,379.55 : x
2. Step 2: Convert to fraction form
   2,374.78/3,276.70 = 1,379.55/x
3. Step 3: Cross multiply
   2,374.78x = 3,276.70 × 1,379.55
4. Step 4: Simplify right side
   2,374.78x = 4,520,371.49
5. Step 5: Solve for x
   x = 4,520,371.49/2,374.78
6. Step 6: Final answer
   x = 1,903.49