Finding the Fourth Proportional to 2,780.91, 3,835.98 and 1,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.91 : 3,835.98 = 1,836.72 : x
2. Step 2: Convert to fraction form
   2,780.91/3,835.98 = 1,836.72/x
3. Step 3: Cross multiply
   2,780.91x = 3,835.98 × 1,836.72
4. Step 4: Simplify right side
   2,780.91x = 7,045,621.19
5. Step 5: Solve for x
   x = 7,045,621.19/2,780.91
6. Step 6: Final answer
   x = 2,533.57