Finding the Fourth Proportional to 1,407.20, 1,941.24 and 1,112

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.20 : 1,941.24 = 1,112 : x
2. Step 2: Convert to fraction form
   1,407.20/1,941.24 = 1,112/x
3. Step 3: Cross multiply
   1,407.20x = 1,941.24 × 1,112
4. Step 4: Simplify right side
   1,407.20x = 2,158,658.88
5. Step 5: Solve for x
   x = 2,158,658.88/1,407.20
6. Step 6: Final answer
   x = 1,534.01