Finding the Fourth Proportional to 2,780.07, 3,836.35 and 1,520.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.07 : 3,836.35 = 1,520.89 : x
2. Step 2: Convert to fraction form
   2,780.07/3,836.35 = 1,520.89/x
3. Step 3: Cross multiply
   2,780.07x = 3,836.35 × 1,520.89
4. Step 4: Simplify right side
   2,780.07x = 5,834,666.35
5. Step 5: Solve for x
   x = 5,834,666.35/2,780.07
6. Step 6: Final answer
   x = 2,098.75