Finding the Fourth Proportional to 2,011.86, 3,007.55 and 1,803.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.86 : 3,007.55 = 1,803.15 : x
2. Step 2: Convert to fraction form
   2,011.86/3,007.55 = 1,803.15/x
3. Step 3: Cross multiply
   2,011.86x = 3,007.55 × 1,803.15
4. Step 4: Simplify right side
   2,011.86x = 5,423,068.29
5. Step 5: Solve for x
   x = 5,423,068.29/2,011.86
6. Step 6: Final answer
   x = 2,695.55