Finding the Fourth Proportional to 1,914.24, 2,640.80 and 1,326.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.24 : 2,640.80 = 1,326.16 : x
2. Step 2: Convert to fraction form
   1,914.24/2,640.80 = 1,326.16/x
3. Step 3: Cross multiply
   1,914.24x = 2,640.80 × 1,326.16
4. Step 4: Simplify right side
   1,914.24x = 3,502,123.33
5. Step 5: Solve for x
   x = 3,502,123.33/1,914.24
6. Step 6: Final answer
   x = 1,829.51