Finding the Fourth Proportional to 1,407.60, 1,940.64 and 1,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.60 : 1,940.64 = 1,014.72 : x
2. Step 2: Convert to fraction form
   1,407.60/1,940.64 = 1,014.72/x
3. Step 3: Cross multiply
   1,407.60x = 1,940.64 × 1,014.72
4. Step 4: Simplify right side
   1,407.60x = 1,969,206.22
5. Step 5: Solve for x
   x = 1,969,206.22/1,407.60
6. Step 6: Final answer
   x = 1,398.98