Finding the Fourth Proportional to 1,379.63, 1,903.50 and 848.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.63 : 1,903.50 = 848.34 : x
2. Step 2: Convert to fraction form
   1,379.63/1,903.50 = 848.34/x
3. Step 3: Cross multiply
   1,379.63x = 1,903.50 × 848.34
4. Step 4: Simplify right side
   1,379.63x = 1,614,815.19
5. Step 5: Solve for x
   x = 1,614,815.19/1,379.63
6. Step 6: Final answer
   x = 1,170.47