Finding the Fourth Proportional to 1,223,931.60, 1,688,749.56 and 740,484.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,931.60 : 1,688,749.56 = 740,484.72 : x
2. Step 2: Convert to fraction form
   1,223,931.60/1,688,749.56 = 740,484.72/x
3. Step 3: Cross multiply
   1,223,931.60x = 1,688,749.56 × 740,484.72
4. Step 4: Simplify right side
   1,223,931.60x = 1,250,493,245,086.72
5. Step 5: Solve for x
   x = 1,250,493,245,086.72/1,223,931.60
6. Step 6: Final answer
   x = 1,021,701.90