Finding the Fourth Proportional to 1,969.63, 2,943.57 and 1,855.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.63 : 2,943.57 = 1,855.83 : x
2. Step 2: Convert to fraction form
   1,969.63/2,943.57 = 1,855.83/x
3. Step 3: Cross multiply
   1,969.63x = 2,943.57 × 1,855.83
4. Step 4: Simplify right side
   1,969.63x = 5,462,748.88
5. Step 5: Solve for x
   x = 5,462,748.88/1,969.63
6. Step 6: Final answer
   x = 2,773.49