Finding the Fourth Proportional to 1,147.69, 1,719.69 and 1,038.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.69 : 1,719.69 = 1,038.34 : x
2. Step 2: Convert to fraction form
   1,147.69/1,719.69 = 1,038.34/x
3. Step 3: Cross multiply
   1,147.69x = 1,719.69 × 1,038.34
4. Step 4: Simplify right side
   1,147.69x = 1,785,622.91
5. Step 5: Solve for x
   x = 1,785,622.91/1,147.69
6. Step 6: Final answer
   x = 1,555.84