Finding the Fourth Proportional to 1,561.01, 2,152.77 and 1,036.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.01 : 2,152.77 = 1,036.13 : x
2. Step 2: Convert to fraction form
   1,561.01/2,152.77 = 1,036.13/x
3. Step 3: Cross multiply
   1,561.01x = 2,152.77 × 1,036.13
4. Step 4: Simplify right side
   1,561.01x = 2,230,538.82
5. Step 5: Solve for x
   x = 2,230,538.82/1,561.01
6. Step 6: Final answer
   x = 1,428.91