Finding the Fourth Proportional to 1,388.16, 1,913.46 and 1,093.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.16 : 1,913.46 = 1,093.04 : x
2. Step 2: Convert to fraction form
   1,388.16/1,913.46 = 1,093.04/x
3. Step 3: Cross multiply
   1,388.16x = 1,913.46 × 1,093.04
4. Step 4: Simplify right side
   1,388.16x = 2,091,488.32
5. Step 5: Solve for x
   x = 2,091,488.32/1,388.16
6. Step 6: Final answer
   x = 1,506.66