Finding the Fourth Proportional to 1,430.91, 1,973.28 and 933.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.91 : 1,973.28 = 933.99 : x
2. Step 2: Convert to fraction form
   1,430.91/1,973.28 = 933.99/x
3. Step 3: Cross multiply
   1,430.91x = 1,973.28 × 933.99
4. Step 4: Simplify right side
   1,430.91x = 1,843,023.79
5. Step 5: Solve for x
   x = 1,843,023.79/1,430.91
6. Step 6: Final answer
   x = 1,288.01