Finding the Fourth Proportional to 1,393.72, 2,088.30 and 846.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.72 : 2,088.30 = 846.07 : x
2. Step 2: Convert to fraction form
   1,393.72/2,088.30 = 846.07/x
3. Step 3: Cross multiply
   1,393.72x = 2,088.30 × 846.07
4. Step 4: Simplify right side
   1,393.72x = 1,766,847.98
5. Step 5: Solve for x
   x = 1,766,847.98/1,393.72
6. Step 6: Final answer
   x = 1,267.72