Finding the Fourth Proportional to 2,223.68, 3,068.72 and 1,228.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.68 : 3,068.72 = 1,228.99 : x
2. Step 2: Convert to fraction form
   2,223.68/3,068.72 = 1,228.99/x
3. Step 3: Cross multiply
   2,223.68x = 3,068.72 × 1,228.99
4. Step 4: Simplify right side
   2,223.68x = 3,771,430.51
5. Step 5: Solve for x
   x = 3,771,430.51/2,223.68
6. Step 6: Final answer
   x = 1,696.03