Finding the Fourth Proportional to 1,742.42, 2,404.77 and 1,123.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.42 : 2,404.77 = 1,123.22 : x
2. Step 2: Convert to fraction form
   1,742.42/2,404.77 = 1,123.22/x
3. Step 3: Cross multiply
   1,742.42x = 2,404.77 × 1,123.22
4. Step 4: Simplify right side
   1,742.42x = 2,701,085.76
5. Step 5: Solve for x
   x = 2,701,085.76/1,742.42
6. Step 6: Final answer
   x = 1,550.19