Finding the Fourth Proportional to 2,503.48, 3,454.72 and 1,384.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.48 : 3,454.72 = 1,384.40 : x
2. Step 2: Convert to fraction form
   2,503.48/3,454.72 = 1,384.40/x
3. Step 3: Cross multiply
   2,503.48x = 3,454.72 × 1,384.40
4. Step 4: Simplify right side
   2,503.48x = 4,782,714.37
5. Step 5: Solve for x
   x = 4,782,714.37/2,503.48
6. Step 6: Final answer
   x = 1,910.43