Finding the Fourth Proportional to 1,272,156.23, 1,754,150.58 and 1,191,443.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,156.23 : 1,754,150.58 = 1,191,443.63 : x
2. Step 2: Convert to fraction form
   1,272,156.23/1,754,150.58 = 1,191,443.63/x
3. Step 3: Cross multiply
   1,272,156.23x = 1,754,150.58 × 1,191,443.63
4. Step 4: Simplify right side
   1,272,156.23x = 2,089,971,525,831.05
5. Step 5: Solve for x
   x = 2,089,971,525,831.05/1,272,156.23
6. Step 6: Final answer
   x = 1,642,857.59