Finding the Fourth Proportional to 1,434.03, 1,978.34 and 836.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.03 : 1,978.34 = 836.48 : x
2. Step 2: Convert to fraction form
   1,434.03/1,978.34 = 836.48/x
3. Step 3: Cross multiply
   1,434.03x = 1,978.34 × 836.48
4. Step 4: Simplify right side
   1,434.03x = 1,654,827.77
5. Step 5: Solve for x
   x = 1,654,827.77/1,434.03
6. Step 6: Final answer
   x = 1,153.97