Finding the Fourth Proportional to 1,430.27, 1,972.23 and 1,131.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.27 : 1,972.23 = 1,131.02 : x
2. Step 2: Convert to fraction form
   1,430.27/1,972.23 = 1,131.02/x
3. Step 3: Cross multiply
   1,430.27x = 1,972.23 × 1,131.02
4. Step 4: Simplify right side
   1,430.27x = 2,230,631.57
5. Step 5: Solve for x
   x = 2,230,631.57/1,430.27
6. Step 6: Final answer
   x = 1,559.59