Finding the Fourth Proportional to 1,078,196.44, 1,617,123.27 and 358,478.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,196.44 : 1,617,123.27 = 358,478.28 : x
2. Step 2: Convert to fraction form
   1,078,196.44/1,617,123.27 = 358,478.28/x
3. Step 3: Cross multiply
   1,078,196.44x = 1,617,123.27 × 358,478.28
4. Step 4: Simplify right side
   1,078,196.44x = 579,703,567,705.43
5. Step 5: Solve for x
   x = 579,703,567,705.43/1,078,196.44
6. Step 6: Final answer
   x = 537,660.44