Finding the Fourth Proportional to 1,223.55, 1,837.14 and 1,187.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.55 : 1,837.14 = 1,187.10 : x
2. Step 2: Convert to fraction form
   1,223.55/1,837.14 = 1,187.10/x
3. Step 3: Cross multiply
   1,223.55x = 1,837.14 × 1,187.10
4. Step 4: Simplify right side
   1,223.55x = 2,180,868.89
5. Step 5: Solve for x
   x = 2,180,868.89/1,223.55
6. Step 6: Final answer
   x = 1,782.41