Finding the Fourth Proportional to 1,164.09, 1,743.39 and 918.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.09 : 1,743.39 = 918.98 : x
2. Step 2: Convert to fraction form
   1,164.09/1,743.39 = 918.98/x
3. Step 3: Cross multiply
   1,164.09x = 1,743.39 × 918.98
4. Step 4: Simplify right side
   1,164.09x = 1,602,131.83
5. Step 5: Solve for x
   x = 1,602,131.83/1,164.09
6. Step 6: Final answer
   x = 1,376.30