Finding the Fourth Proportional to 1,434.50, 1,980.34 and 1,348.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.50 : 1,980.34 = 1,348.10 : x
2. Step 2: Convert to fraction form
   1,434.50/1,980.34 = 1,348.10/x
3. Step 3: Cross multiply
   1,434.50x = 1,980.34 × 1,348.10
4. Step 4: Simplify right side
   1,434.50x = 2,669,696.35
5. Step 5: Solve for x
   x = 2,669,696.35/1,434.50
6. Step 6: Final answer
   x = 1,861.06