Finding the Fourth Proportional to 1,551.52, 2,140.86 and 921.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.52 : 2,140.86 = 921.82 : x
2. Step 2: Convert to fraction form
   1,551.52/2,140.86 = 921.82/x
3. Step 3: Cross multiply
   1,551.52x = 2,140.86 × 921.82
4. Step 4: Simplify right side
   1,551.52x = 1,973,484.81
5. Step 5: Solve for x
   x = 1,973,484.81/1,551.52
6. Step 6: Final answer
   x = 1,271.97