Finding the Fourth Proportional to 1,742,892.71, 2,405,417.06 and 978,946.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742,892.71 : 2,405,417.06 = 978,946.25 : x
2. Step 2: Convert to fraction form
   1,742,892.71/2,405,417.06 = 978,946.25/x
3. Step 3: Cross multiply
   1,742,892.71x = 2,405,417.06 × 978,946.25
4. Step 4: Simplify right side
   1,742,892.71x = 2,354,774,005,678.29
5. Step 5: Solve for x
   x = 2,354,774,005,678.29/1,742,892.71
6. Step 6: Final answer
   x = 1,351,072.27