Finding the Fourth Proportional to 2,069.60, 3,111.15 and 1,802.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.60 : 3,111.15 = 1,802.30 : x
2. Step 2: Convert to fraction form
   2,069.60/3,111.15 = 1,802.30/x
3. Step 3: Cross multiply
   2,069.60x = 3,111.15 × 1,802.30
4. Step 4: Simplify right side
   2,069.60x = 5,607,225.65
5. Step 5: Solve for x
   x = 5,607,225.65/2,069.60
6. Step 6: Final answer
   x = 2,709.33