Finding the Fourth Proportional to 1,941.32, 2,678.93 and 1,057.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.32 : 2,678.93 = 1,057.12 : x
2. Step 2: Convert to fraction form
   1,941.32/2,678.93 = 1,057.12/x
3. Step 3: Cross multiply
   1,941.32x = 2,678.93 × 1,057.12
4. Step 4: Simplify right side
   1,941.32x = 2,831,938.50
5. Step 5: Solve for x
   x = 2,831,938.50/1,941.32
6. Step 6: Final answer
   x = 1,458.77