Finding the Fourth Proportional to 1,940.04, 2,908.34 and 1,390.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.04 : 2,908.34 = 1,390.84 : x
2. Step 2: Convert to fraction form
   1,940.04/2,908.34 = 1,390.84/x
3. Step 3: Cross multiply
   1,940.04x = 2,908.34 × 1,390.84
4. Step 4: Simplify right side
   1,940.04x = 4,045,035.61
5. Step 5: Solve for x
   x = 4,045,035.61/1,940.04
6. Step 6: Final answer
   x = 2,085.03