Finding the Fourth Proportional to 1,742,792.72, 2,405,279.75 and 978,846.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742,792.72 : 2,405,279.75 = 978,846.35 : x
2. Step 2: Convert to fraction form
   1,742,792.72/2,405,279.75 = 978,846.35/x
3. Step 3: Cross multiply
   1,742,792.72x = 2,405,279.75 × 978,846.35
4. Step 4: Simplify right side
   1,742,792.72x = 2,354,399,287,095.78
5. Step 5: Solve for x
   x = 2,354,399,287,095.78/1,742,792.72
6. Step 6: Final answer
   x = 1,350,934.78