Finding the Fourth Proportional to 1,513.42, 2,088.50 and 841.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.42 : 2,088.50 = 841.20 : x
2. Step 2: Convert to fraction form
   1,513.42/2,088.50 = 841.20/x
3. Step 3: Cross multiply
   1,513.42x = 2,088.50 × 841.20
4. Step 4: Simplify right side
   1,513.42x = 1,756,846.20
5. Step 5: Solve for x
   x = 1,756,846.20/1,513.42
6. Step 6: Final answer
   x = 1,160.85