Finding the Fourth Proportional to 1,368.07, 1,888.06 and 1,118.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.07 : 1,888.06 = 1,118.70 : x
2. Step 2: Convert to fraction form
   1,368.07/1,888.06 = 1,118.70/x
3. Step 3: Cross multiply
   1,368.07x = 1,888.06 × 1,118.70
4. Step 4: Simplify right side
   1,368.07x = 2,112,172.72
5. Step 5: Solve for x
   x = 2,112,172.72/1,368.07
6. Step 6: Final answer
   x = 1,543.91