Finding the Fourth Proportional to 1,562.63, 2,156.37 and 899.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.63 : 2,156.37 = 899.51 : x
2. Step 2: Convert to fraction form
   1,562.63/2,156.37 = 899.51/x
3. Step 3: Cross multiply
   1,562.63x = 2,156.37 × 899.51
4. Step 4: Simplify right side
   1,562.63x = 1,939,665.60
5. Step 5: Solve for x
   x = 1,939,665.60/1,562.63
6. Step 6: Final answer
   x = 1,241.28