Finding the Fourth Proportional to 1,415.51, 1,953.41 and 786.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.51 : 1,953.41 = 786.05 : x
2. Step 2: Convert to fraction form
   1,415.51/1,953.41 = 786.05/x
3. Step 3: Cross multiply
   1,415.51x = 1,953.41 × 786.05
4. Step 4: Simplify right side
   1,415.51x = 1,535,477.93
5. Step 5: Solve for x
   x = 1,535,477.93/1,415.51
6. Step 6: Final answer
   x = 1,084.75