Finding the Fourth Proportional to 1,988,223.72, 2,743,826.40 and 1,128,864.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988,223.72 : 2,743,826.40 = 1,128,864.00 : x
2. Step 2: Convert to fraction form
   1,988,223.72/2,743,826.40 = 1,128,864.00/x
3. Step 3: Cross multiply
   1,988,223.72x = 2,743,826.40 × 1,128,864.00
4. Step 4: Simplify right side
   1,988,223.72x = 3,097,406,842,583.27
5. Step 5: Solve for x
   x = 3,097,406,842,583.27/1,988,223.72
6. Step 6: Final answer
   x = 1,557,876.42