Finding the Fourth Proportional to 1,345.62, 1,855.50 and 847.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.62 : 1,855.50 = 847.68 : x
2. Step 2: Convert to fraction form
   1,345.62/1,855.50 = 847.68/x
3. Step 3: Cross multiply
   1,345.62x = 1,855.50 × 847.68
4. Step 4: Simplify right side
   1,345.62x = 1,572,870.24
5. Step 5: Solve for x
   x = 1,572,870.24/1,345.62
6. Step 6: Final answer
   x = 1,168.88