Finding the Fourth Proportional to 1,345.65, 1,855.89 and 847.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.65 : 1,855.89 = 847.41 : x
2. Step 2: Convert to fraction form
   1,345.65/1,855.89 = 847.41/x
3. Step 3: Cross multiply
   1,345.65x = 1,855.89 × 847.41
4. Step 4: Simplify right side
   1,345.65x = 1,572,699.74
5. Step 5: Solve for x
   x = 1,572,699.74/1,345.65
6. Step 6: Final answer
   x = 1,168.73