Finding the Fourth Proportional to 1,348.82, 1,861.90 and 1,054.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.82 : 1,861.90 = 1,054.19 : x
2. Step 2: Convert to fraction form
   1,348.82/1,861.90 = 1,054.19/x
3. Step 3: Cross multiply
   1,348.82x = 1,861.90 × 1,054.19
4. Step 4: Simplify right side
   1,348.82x = 1,962,784.42
5. Step 5: Solve for x
   x = 1,962,784.42/1,348.82
6. Step 6: Final answer
   x = 1,455.18