Finding the Fourth Proportional to 1,478.82, 2,041.20 and 918.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.82 : 2,041.20 = 918.98 : x
2. Step 2: Convert to fraction form
   1,478.82/2,041.20 = 918.98/x
3. Step 3: Cross multiply
   1,478.82x = 2,041.20 × 918.98
4. Step 4: Simplify right side
   1,478.82x = 1,875,819.42
5. Step 5: Solve for x
   x = 1,875,819.42/1,478.82
6. Step 6: Final answer
   x = 1,268.45