Finding the Fourth Proportional to 1,430.86, 1,974.53 and 801.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.86 : 1,974.53 = 801.35 : x
2. Step 2: Convert to fraction form
   1,430.86/1,974.53 = 801.35/x
3. Step 3: Cross multiply
   1,430.86x = 1,974.53 × 801.35
4. Step 4: Simplify right side
   1,430.86x = 1,582,294.10
5. Step 5: Solve for x
   x = 1,582,294.10/1,430.86
6. Step 6: Final answer
   x = 1,105.84