Finding the Fourth Proportional to 1,540.05, 2,307.74 and 1,129.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.05 : 2,307.74 = 1,129.46 : x
2. Step 2: Convert to fraction form
   1,540.05/2,307.74 = 1,129.46/x
3. Step 3: Cross multiply
   1,540.05x = 2,307.74 × 1,129.46
4. Step 4: Simplify right side
   1,540.05x = 2,606,500.02
5. Step 5: Solve for x
   x = 2,606,500.02/1,540.05
6. Step 6: Final answer
   x = 1,692.48