Finding the Fourth Proportional to 1,564.81, 2,159.98 and 901.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.81 : 2,159.98 = 901.93 : x
2. Step 2: Convert to fraction form
   1,564.81/2,159.98 = 901.93/x
3. Step 3: Cross multiply
   1,564.81x = 2,159.98 × 901.93
4. Step 4: Simplify right side
   1,564.81x = 1,948,150.76
5. Step 5: Solve for x
   x = 1,948,150.76/1,564.81
6. Step 6: Final answer
   x = 1,244.98