Finding the Fourth Proportional to 2,109.48, 3,164.67 and 1,055.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.48 : 3,164.67 = 1,055.84 : x
2. Step 2: Convert to fraction form
   2,109.48/3,164.67 = 1,055.84/x
3. Step 3: Cross multiply
   2,109.48x = 3,164.67 × 1,055.84
4. Step 4: Simplify right side
   2,109.48x = 3,341,387.81
5. Step 5: Solve for x
   x = 3,341,387.81/2,109.48
6. Step 6: Final answer
   x = 1,583.98