Finding the Fourth Proportional to 1,427.09, 1,971.95 and 1,113.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.09 : 1,971.95 = 1,113.14 : x
2. Step 2: Convert to fraction form
   1,427.09/1,971.95 = 1,113.14/x
3. Step 3: Cross multiply
   1,427.09x = 1,971.95 × 1,113.14
4. Step 4: Simplify right side
   1,427.09x = 2,195,055.79
5. Step 5: Solve for x
   x = 2,195,055.79/1,427.09
6. Step 6: Final answer
   x = 1,538.14