Finding the Fourth Proportional to 1,300.05, 1,946.20 and 836.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.05 : 1,946.20 = 836.45 : x
2. Step 2: Convert to fraction form
   1,300.05/1,946.20 = 836.45/x
3. Step 3: Cross multiply
   1,300.05x = 1,946.20 × 836.45
4. Step 4: Simplify right side
   1,300.05x = 1,627,903.86
5. Step 5: Solve for x
   x = 1,627,903.86/1,300.05
6. Step 6: Final answer
   x = 1,252.19