Finding the Fourth Proportional to 1,559,259.96, 2,151,814.05 and 915,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559,259.96 : 2,151,814.05 = 915,144.72 : x
2. Step 2: Convert to fraction form
   1,559,259.96/2,151,814.05 = 915,144.72/x
3. Step 3: Cross multiply
   1,559,259.96x = 2,151,814.05 × 915,144.72
4. Step 4: Simplify right side
   1,559,259.96x = 1,969,221,266,279.32
5. Step 5: Solve for x
   x = 1,969,221,266,279.32/1,559,259.96
6. Step 6: Final answer
   x = 1,262,920.43