Finding the Fourth Proportional to 1,978,685.88, 2,968,540.54 and 1,158,716.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,685.88 : 2,968,540.54 = 1,158,716.98 : x
2. Step 2: Convert to fraction form
   1,978,685.88/2,968,540.54 = 1,158,716.98/x
3. Step 3: Cross multiply
   1,978,685.88x = 2,968,540.54 × 1,158,716.98
4. Step 4: Simplify right side
   1,978,685.88x = 3,439,698,329,516.37
5. Step 5: Solve for x
   x = 3,439,698,329,516.37/1,978,685.88
6. Step 6: Final answer
   x = 1,738,375.13