Finding the Fourth Proportional to 1,555.07, 2,145.96 and 846.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.07 : 2,145.96 = 846.89 : x
2. Step 2: Convert to fraction form
   1,555.07/2,145.96 = 846.89/x
3. Step 3: Cross multiply
   1,555.07x = 2,145.96 × 846.89
4. Step 4: Simplify right side
   1,555.07x = 1,817,381.33
5. Step 5: Solve for x
   x = 1,817,381.33/1,555.07
6. Step 6: Final answer
   x = 1,168.69