Finding the Fourth Proportional to 2,503.31, 3,454.50 and 1,384.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.31 : 3,454.50 = 1,384.21 : x
2. Step 2: Convert to fraction form
   2,503.31/3,454.50 = 1,384.21/x
3. Step 3: Cross multiply
   2,503.31x = 3,454.50 × 1,384.21
4. Step 4: Simplify right side
   2,503.31x = 4,781,763.81
5. Step 5: Solve for x
   x = 4,781,763.81/2,503.31
6. Step 6: Final answer
   x = 1,910.17