Finding the Fourth Proportional to 1,401.99, 1,937.21 and 1,109.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.99 : 1,937.21 = 1,109.58 : x
2. Step 2: Convert to fraction form
   1,401.99/1,937.21 = 1,109.58/x
3. Step 3: Cross multiply
   1,401.99x = 1,937.21 × 1,109.58
4. Step 4: Simplify right side
   1,401.99x = 2,149,489.47
5. Step 5: Solve for x
   x = 2,149,489.47/1,401.99
6. Step 6: Final answer
   x = 1,533.17