Finding the Fourth Proportional to 1,349.84, 1,858.12 and 1,142.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,349.84 : 1,858.12 = 1,142.48 : x
2. Step 2: Convert to fraction form
   1,349.84/1,858.12 = 1,142.48/x
3. Step 3: Cross multiply
   1,349.84x = 1,858.12 × 1,142.48
4. Step 4: Simplify right side
   1,349.84x = 2,122,864.94
5. Step 5: Solve for x
   x = 2,122,864.94/1,349.84
6. Step 6: Final answer
   x = 1,572.68