Finding the Fourth Proportional to 1,201.37, 1,656.89 and 781.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201.37 : 1,656.89 = 781.52 : x
2. Step 2: Convert to fraction form
   1,201.37/1,656.89 = 781.52/x
3. Step 3: Cross multiply
   1,201.37x = 1,656.89 × 781.52
4. Step 4: Simplify right side
   1,201.37x = 1,294,888.77
5. Step 5: Solve for x
   x = 1,294,888.77/1,201.37
6. Step 6: Final answer
   x = 1,077.84