Finding the Fourth Proportional to 1,550.78, 2,141.08 and 1,384.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.78 : 2,141.08 = 1,384.72 : x
2. Step 2: Convert to fraction form
   1,550.78/2,141.08 = 1,384.72/x
3. Step 3: Cross multiply
   1,550.78x = 2,141.08 × 1,384.72
4. Step 4: Simplify right side
   1,550.78x = 2,964,796.30
5. Step 5: Solve for x
   x = 2,964,796.30/1,550.78
6. Step 6: Final answer
   x = 1,911.81