Finding the Fourth Proportional to 1,430.09, 1,976.09 and 1,116.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.09 : 1,976.09 = 1,116.15 : x
2. Step 2: Convert to fraction form
   1,430.09/1,976.09 = 1,116.15/x
3. Step 3: Cross multiply
   1,430.09x = 1,976.09 × 1,116.15
4. Step 4: Simplify right side
   1,430.09x = 2,205,607.27
5. Step 5: Solve for x
   x = 2,205,607.27/1,430.09
6. Step 6: Final answer
   x = 1,542.29