Finding the Fourth Proportional to 2,045.45, 2,820.49 and 1,381.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.45 : 2,820.49 = 1,381.15 : x
2. Step 2: Convert to fraction form
   2,045.45/2,820.49 = 1,381.15/x
3. Step 3: Cross multiply
   2,045.45x = 2,820.49 × 1,381.15
4. Step 4: Simplify right side
   2,045.45x = 3,895,522.75
5. Step 5: Solve for x
   x = 3,895,522.75/2,045.45
6. Step 6: Final answer
   x = 1,904.48