Finding the Fourth Proportional to 1,262,538.32, 1,742,274.72 and 689,580.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262,538.32 : 1,742,274.72 = 689,580.56 : x
2. Step 2: Convert to fraction form
   1,262,538.32/1,742,274.72 = 689,580.56/x
3. Step 3: Cross multiply
   1,262,538.32x = 1,742,274.72 × 689,580.56
4. Step 4: Simplify right side
   1,262,538.32x = 1,201,438,777,091.44
5. Step 5: Solve for x
   x = 1,201,438,777,091.44/1,262,538.32
6. Step 6: Final answer
   x = 951,605.79