Finding the Fourth Proportional to 1,401.81, 1,933.20 and 1,122.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.81 : 1,933.20 = 1,122.05 : x
2. Step 2: Convert to fraction form
   1,401.81/1,933.20 = 1,122.05/x
3. Step 3: Cross multiply
   1,401.81x = 1,933.20 × 1,122.05
4. Step 4: Simplify right side
   1,401.81x = 2,169,151.89
5. Step 5: Solve for x
   x = 2,169,151.89/1,401.81
6. Step 6: Final answer
   x = 1,547.40