Finding the Fourth Proportional to 1,395.42, 1,926.08 and 1,117.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.42 : 1,926.08 = 1,117.59 : x
2. Step 2: Convert to fraction form
   1,395.42/1,926.08 = 1,117.59/x
3. Step 3: Cross multiply
   1,395.42x = 1,926.08 × 1,117.59
4. Step 4: Simplify right side
   1,395.42x = 2,152,567.75
5. Step 5: Solve for x
   x = 2,152,567.75/1,395.42
6. Step 6: Final answer
   x = 1,542.59