Finding the Fourth Proportional to 2,045.10, 2,820.86 and 1,259.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.10 : 2,820.86 = 1,259.61 : x
2. Step 2: Convert to fraction form
   2,045.10/2,820.86 = 1,259.61/x
3. Step 3: Cross multiply
   2,045.10x = 2,820.86 × 1,259.61
4. Step 4: Simplify right side
   2,045.10x = 3,553,177.17
5. Step 5: Solve for x
   x = 3,553,177.17/2,045.10
6. Step 6: Final answer
   x = 1,737.41