Finding the Fourth Proportional to 3,780.95, 5,671.69 and 1,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.95 : 5,671.69 = 1,007.61 : x
2. Step 2: Convert to fraction form
   3,780.95/5,671.69 = 1,007.61/x
3. Step 3: Cross multiply
   3,780.95x = 5,671.69 × 1,007.61
4. Step 4: Simplify right side
   3,780.95x = 5,714,849.04
5. Step 5: Solve for x
   x = 5,714,849.04/3,780.95
6. Step 6: Final answer
   x = 1,511.49