Finding the Fourth Proportional to 1,415.55, 1,953.42 and 786.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.55 : 1,953.42 = 786.08 : x
2. Step 2: Convert to fraction form
   1,415.55/1,953.42 = 786.08/x
3. Step 3: Cross multiply
   1,415.55x = 1,953.42 × 786.08
4. Step 4: Simplify right side
   1,415.55x = 1,535,535.34
5. Step 5: Solve for x
   x = 1,535,535.34/1,415.55
6. Step 6: Final answer
   x = 1,084.76